[PATCH] Remove uninitialized_var()

From: Ingo Molnar
Date: Sat Oct 27 2012 - 09:12:46 EST

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* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Fri, Oct 26, 2012 at 12:35 PM, Corey Minyard <cminyard@xxxxxxxxxx> wrote:
> >
> > I'll do a patch to switch it to uninitialized_var() for the
> > next set of things I send. Thanks.
>
> Actually, I'm seriously considering getting rid of
> uninitialized_var().
>
> The thing is an abomination, and we've already had one bug due
> to it (real uninitialized variable that was incorrectly hidden
> by uninitialized_var()).
>
> The thing is moronic. The whole thing is almost entirely due
> to compiler bugs (*stupid* gcc behavior), and we would have
> been better off with an explicit (unnecessary) initialization
> that at least doesn't cause random crashes etc if it turns out
> to be wrong.
>
> So please don't use that abortion. Just initialize things to
> 0/NULL/whatever if gcc complains and you want to get rid of
> them. Better than the crap that is uninitialized_var(), which
> just causes silent random behavior if it is wrong.

Yes!

Also, often these warnings are coupled with unnecessarily high
code flow complexity.

The = 0 initialization will make the code a bit slower (because
if the compiler cannot see through data dependencies it cannot
eliminate the initialization either) - so there's incentive to
clean it up a bit and thus simplify the flow of control for the
compiler to see whether a particular variable is used or not.

uninitialized_var() allows fast but complex code, and is
inherently dangerous as well due to it shutting off useful
compiler warnings.

[ uninitialized_var() is also bad due to its long name: it takes
up screen real estate and attracts the eye and thus gives a
variable artificial 'importance' which it should not
necessarily have. I have looked at uninitialized_var()
lines hundreds of times already, just to be annoyed that it's
nothing truly important. ]

So, the patch below (99% generated via a script, some done
manually) removes uninitialized_var() and all of its uses,
against your latest tree from today (e657e078d3df).

There's 3 types of conversions done:

uninitialized_var(x) => x = 0 /* for scalar types */
uninitialized_var(x) => x = NULL /* for pointers */
uninitialized_var(x) => x = { } /* for structures, unions */

each picked depending on the context.

Testing:

154 of the .c changes build on x86 and were thus build tested
under allyesconfig and are looking good (i.e. all except one
builds warning-free), 13 changes won't build on x86 but look
correct in review.

[ I also ran allyes/allno/def/modconfig builds and nothing broke
the build. There's one new warning on arch/x86/, it's
harmless, we'll fix it separately via x86/urgent. ]

So it looks pretty safe to me and you might as well feel tempted
by this patch, to eliminate this menace from the Linux kernel
once and for all ;-)

Thanks,

Ingo

---------------->

Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>

arch/arm/mach-sa1100/assabet.c | 2 +-
arch/ia64/kernel/process.c | 2 +-
arch/ia64/mm/discontig.c | 2 +-
arch/ia64/mm/tlb.c | 2 +-
arch/ia64/sn/kernel/tiocx.c | 2 +-
arch/ia64/sn/pci/pcibr/pcibr_provider.c | 2 +-
arch/powerpc/kvm/book3s_pr.c | 2 +-
arch/powerpc/kvm/powerpc.c | 2 +-
arch/powerpc/mm/numa.c | 2 +-
arch/powerpc/platforms/pseries/iommu.c | 4 ++--
arch/s390/kernel/smp.c | 2 +-
arch/s390/mm/pgtable.c | 4 ++--
arch/tile/include/asm/futex.h | 2 +-
arch/x86/kernel/apic/es7000_32.c | 2 +-
arch/x86/kernel/quirks.c | 10 +++++-----
arch/x86/kvm/mmu.c | 2 +-
arch/x86/kvm/paging_tmpl.h | 2 +-
arch/x86/mm/numa.c | 2 +-
arch/x86/xen/p2m.c | 8 ++++----
arch/xtensa/variants/s6000/delay.c | 4 ++--
drivers/acpi/acpi_pad.c | 2 +-
drivers/acpi/acpica/tbutils.c | 2 +-
drivers/ata/libata-scsi.c | 2 +-
drivers/atm/zatm.c | 2 +-
drivers/block/nvme.c | 2 +-
drivers/char/mmtimer.c | 2 +-
drivers/firewire/ohci.c | 14 +++++++-------
drivers/gpu/drm/drm_edid.c | 2 +-
drivers/gpu/drm/i915/i915_gem_stolen.c | 2 +-
drivers/hid/uhid.c | 2 +-
drivers/i2c/busses/i2c-mxs.c | 2 +-
drivers/ide/ide-acpi.c | 2 +-
drivers/ide/ide-atapi.c | 2 +-
drivers/ide/ide-io-std.c | 4 ++--
drivers/ide/ide-io.c | 8 ++++----
drivers/ide/ide-sysfs.c | 2 +-
drivers/ide/ide-taskfile.c | 2 +-
drivers/ide/umc8672.c | 2 +-
drivers/infiniband/core/uverbs_cmd.c | 6 +++---
drivers/infiniband/core/verbs.c | 4 ++--
drivers/infiniband/hw/cxgb3/iwch_qp.c | 2 +-
drivers/infiniband/hw/mlx4/qp.c | 8 ++++----
drivers/infiniband/hw/mthca/mthca_qp.c | 10 +++++-----
drivers/input/serio/serio_raw.c | 2 +-
drivers/iommu/intel-iommu.c | 2 +-
drivers/iommu/omap-iommu-debug.c | 2 +-
drivers/iommu/tegra-smmu.c | 4 ++--
drivers/isdn/hardware/eicon/debug.c | 2 +-
drivers/lguest/lguest_user.c | 2 +-
drivers/md/dm-ioctl.c | 2 +-
drivers/md/dm-snap-persistent.c | 2 +-
drivers/md/dm-table.c | 8 ++++----
drivers/md/raid5.c | 2 +-
drivers/media/dvb-frontends/af9013.c | 2 +-
drivers/media/dvb-frontends/af9033.c | 2 +-
drivers/media/dvb-frontends/cxd2820r_core.c | 2 +-
drivers/media/platform/omap3isp/ispqueue.c | 2 +-
drivers/media/tuners/tda18212.c | 2 +-
drivers/media/tuners/tda18218.c | 2 +-
drivers/media/usb/dvb-usb-v2/af9015.c | 2 +-
drivers/media/usb/dvb-usb/dib0700_core.c | 2 +-
drivers/media/usb/gspca/vicam.c | 2 +-
drivers/media/usb/uvc/uvc_video.c | 8 ++++----
drivers/memstick/host/jmb38x_ms.c | 2 +-
drivers/memstick/host/tifm_ms.c | 2 +-
drivers/mmc/host/sdhci.c | 4 ++--
drivers/mtd/nand/nand_ecc.c | 2 +-
drivers/mtd/nand/s3c2410.c | 2 +-
drivers/mtd/ubi/attach.c | 2 +-
drivers/mtd/ubi/eba.c | 2 +-
drivers/mtd/ubi/wl.c | 2 +-
drivers/net/dsa/mv88e6060.c | 2 +-
drivers/net/dsa/mv88e6xxx.c | 2 +-
drivers/net/ethernet/broadcom/bnx2.c | 4 ++--
drivers/net/ethernet/neterion/s2io.c | 2 +-
drivers/net/ethernet/qlogic/qla3xxx.c | 2 +-
drivers/net/ethernet/realtek/r8169.c | 2 +-
drivers/net/ethernet/sis/sis900.c | 2 +-
drivers/net/ethernet/sun/cassini.c | 2 +-
drivers/net/ethernet/sun/niu.c | 6 +++---
drivers/net/wan/z85230.c | 2 +-
drivers/net/wireless/ath/ath6kl/init.c | 2 +-
drivers/net/wireless/ath/ath9k/init.c | 2 +-
drivers/net/wireless/b43/debugfs.c | 2 +-
drivers/net/wireless/b43/dma.c | 2 +-
drivers/net/wireless/b43/lo.c | 2 +-
drivers/net/wireless/b43/main.c | 2 +-
drivers/net/wireless/b43/phy_n.c | 2 +-
drivers/net/wireless/b43/xmit.c | 12 ++++++------
drivers/net/wireless/b43legacy/debugfs.c | 2 +-
drivers/net/wireless/b43legacy/main.c | 2 +-
drivers/net/wireless/iwlegacy/3945.c | 2 +-
drivers/net/wireless/iwlegacy/4965-mac.c | 2 +-
drivers/net/wireless/rtlwifi/rtl8192cu/hw.c | 6 +++---
drivers/net/xen-netback/netback.c | 2 +-
drivers/pci/pcie/aer/aerdrv_core.c | 2 +-
drivers/platform/x86/hdaps.c | 4 ++--
drivers/s390/cio/cio.c | 2 +-
drivers/scsi/dc395x.c | 2 +-
drivers/scsi/pm8001/pm8001_hwi.c | 2 +-
drivers/spi/spi-davinci.c | 2 +-
drivers/ssb/driver_chipcommon.c | 4 ++--
drivers/staging/zsmalloc/zsmalloc-main.c | 2 +-
drivers/tty/cyclades.c | 2 +-
drivers/tty/isicom.c | 2 +-
drivers/usb/gadget/uvc_queue.c | 2 +-
drivers/usb/musb/cppi_dma.c | 2 +-
drivers/usb/storage/sddr55.c | 4 ++--
drivers/vhost/net.c | 4 ++--
drivers/vhost/vhost.c | 2 +-
drivers/video/matrox/matroxfb_maven.c | 6 +++---
drivers/video/pm3fb.c | 6 +++---
drivers/video/riva/riva_hw.c | 4 ++--
drivers/virtio/virtio_ring.c | 2 +-
fs/afs/dir.c | 2 +-
fs/afs/security.c | 2 +-
fs/binfmt_flat.c | 2 +-
fs/dlm/netlink.c | 2 +-
fs/fat/dir.c | 2 +-
fs/fuse/control.c | 4 ++--
fs/gfs2/recovery.c | 2 +-
fs/hfsplus/unicode.c | 2 +-
fs/isofs/namei.c | 4 ++--
fs/jffs2/erase.c | 2 +-
fs/nfsd/nfsctl.c | 2 +-
fs/ocfs2/alloc.c | 4 ++--
fs/ocfs2/dir.c | 14 +++++++-------
fs/ocfs2/extent_map.c | 4 ++--
fs/ocfs2/namei.c | 2 +-
fs/ocfs2/refcounttree.c | 2 +-
fs/ocfs2/stack_user.c | 2 +-
fs/ocfs2/xattr.c | 2 +-
fs/omfs/file.c | 2 +-
fs/ubifs/budget.c | 2 +-
fs/ubifs/commit.c | 6 +++---
fs/ubifs/dir.c | 2 +-
fs/ubifs/file.c | 4 ++--
fs/ubifs/journal.c | 4 ++--
fs/ubifs/lpt.c | 2 +-
fs/ubifs/tnc.c | 6 +++---
fs/ubifs/tnc_misc.c | 4 ++--
fs/udf/balloc.c | 2 +-
fs/xfs/xfs_bmap.c | 2 +-
fs/xfs/xfs_file.c | 4 ++--
include/linux/compiler-gcc.h | 6 ------
include/linux/compiler-intel.h | 2 --
include/linux/mm.h | 2 +-
ipc/msg.c | 2 +-
kernel/async.c | 4 ++--
kernel/audit.c | 2 +-
kernel/debug/kdb/kdb_io.c | 2 +-
kernel/events/uprobes.c | 2 +-
kernel/exit.c | 2 +-
kernel/futex.c | 10 +++++-----
kernel/futex_compat.c | 2 +-
kernel/lockdep.c | 14 +++++++-------
lib/dma-debug.c | 2 +-
lib/radix-tree.c | 4 ++--
mm/frontswap.c | 2 +-
mm/ksm.c | 2 +-
mm/memcontrol.c | 8 ++++----
mm/memory.c | 2 +-
mm/mempolicy.c | 6 +++---
mm/oom_kill.c | 2 +-
mm/page-writeback.c | 4 ++--
mm/page_alloc.c | 2 +-
mm/percpu.c | 2 +-
mm/slub.c | 2 +-
mm/swap.c | 4 ++--
net/dccp/options.c | 2 +-
net/ipv6/ip6_flowlabel.c | 2 +-
net/netfilter/nf_conntrack_ftp.c | 2 +-
net/netfilter/nfnetlink_queue_core.c | 4 ++--
net/netfilter/xt_socket.c | 10 +++++-----
net/sched/cls_flow.c | 2 +-
net/sched/sch_cbq.c | 2 +-
net/sched/sch_fq_codel.c | 2 +-
net/sched/sch_hfsc.c | 2 +-
net/sched/sch_htb.c | 2 +-
net/sched/sch_sfq.c | 2 +-
net/sunrpc/xprtrdma/svc_rdma_transport.c | 2 +-
sound/core/control_compat.c | 2 +-
sound/isa/sb/sb16_csp.c | 2 +-
sound/usb/endpoint.c | 2 +-
tools/virtio/linux/virtio.h | 2 --
185 files changed, 281 insertions(+), 291 deletions(-)

diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index 6a7ad3c..2a8bf2c 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -388,7 +388,7 @@ static void __init map_sa1100_gpio_regs( void )
*/
static void __init get_assabet_scr(void)
{
- unsigned long uninitialized_var(scr), i;
+ unsigned long scr = 0, i;

GPDR |= 0x3fc; /* Configure GPIO 9:2 as outputs */
GPSR = 0x3fc; /* Write 0xFF to GPIO 9:2 */
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 35e106f..cc37525 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -493,7 +493,7 @@ static void
do_copy_task_regs (struct task_struct *task, struct unw_frame_info *info, void *arg)
{
unsigned long mask, sp, nat_bits = 0, ar_rnat, urbs_end, cfm;
- unsigned long uninitialized_var(ip); /* GCC be quiet */
+ unsigned long ip = 0; /* GCC be quiet */
elf_greg_t *dst = arg;
struct pt_regs *pt;
char nat;
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index c641333..c2c5e54 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -185,7 +185,7 @@ static void *per_cpu_node_setup(void *cpu_data, int node)
void __init setup_per_cpu_areas(void)
{
struct pcpu_alloc_info *ai;
- struct pcpu_group_info *uninitialized_var(gi);
+ struct pcpu_group_info *gi = NULL;
unsigned int *cpu_map;
void *base;
unsigned long base_offset;
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 7b3cdc6..5f57a8e 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -340,7 +340,7 @@ EXPORT_SYMBOL(flush_tlb_range);
void __devinit
ia64_tlb_init (void)
{
- ia64_ptce_info_t uninitialized_var(ptce_info); /* GCC be quiet */
+ ia64_ptce_info_t ptce_info = 0; /* GCC be quiet */
u64 tr_pgbits;
long status;
pal_vm_info_1_u_t vm_info_1;
diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 14c1711..30df032 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -371,7 +371,7 @@ static void tio_corelet_reset(nasid_t nasid, int corelet)

static int is_fpga_tio(int nasid, int *bt)
{
- u16 uninitialized_var(ioboard_type); /* GCC be quiet */
+ u16 ioboard_type = 0; /* GCC be quiet */
long rc;

rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard_type);
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 8dbbef4..ee7ee48 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -82,7 +82,7 @@ static int sal_pcibr_error_interrupt(struct pcibus_info *soft)
u16 sn_ioboard_to_pci_bus(struct pci_bus *pci_bus)
{
long rc;
- u16 uninitialized_var(ioboard); /* GCC be quiet */
+ u16 ioboard = 0; /* GCC be quiet */
nasid_t nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);

rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard);
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 05c28f5..4ae1546 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -1012,7 +1012,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
#ifdef CONFIG_ALTIVEC
vector128 vr[32];
vector128 vscr;
- unsigned long uninitialized_var(vrsave);
+ unsigned long vrsave = 0;
int used_vr;
#endif
#ifdef CONFIG_VSX
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 4d213b8..2173525 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -447,7 +447,7 @@ static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
struct kvm_run *run)
{
- u64 uninitialized_var(gpr);
+ u64 gpr = 0;

if (run->mmio.len > sizeof(gpr)) {
printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 59213cf..3f4ed91 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -637,7 +637,7 @@ static inline int __init read_usm_ranges(const u32 **usm)
*/
static void __init parse_drconf_memory(struct device_node *memory)
{
- const u32 *uninitialized_var(dm), *usm;
+ const u32 *dm = NULL, *usm;
unsigned int n, rc, ranges, is_kexec_kdump = 0;
unsigned long lmb_size, base, size, sz;
int nid;
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 6153eea..eac8b86 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -930,8 +930,8 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
int page_shift;
u64 dma_addr, max_addr;
struct device_node *dn;
- const u32 *uninitialized_var(ddw_avail);
- const u32 *uninitialized_var(ddw_extensions);
+ const u32 *ddw_avail = NULL;
+ const u32 *ddw_extensions = NULL;
u32 ddw_restore_token = 0;
struct direct_window *window;
struct property *win64;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index ea431e5..e43ed35 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -126,7 +126,7 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)

static inline int pcpu_stopped(struct pcpu *pcpu)
{
- u32 uninitialized_var(status);
+ u32 status = 0;

if (__pcpu_sigp(pcpu->address, SIGP_SENSE,
0, &status) != SIGP_CC_STATUS_STORED)
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index c8188a1..6064626 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -609,8 +609,8 @@ static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits)
*/
unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr)
{
- unsigned long *uninitialized_var(table);
- struct page *uninitialized_var(page);
+ unsigned long *table = NULL;
+ struct page *page = NULL;
unsigned int mask, bit;

if (mm_has_pgste(mm))
diff --git a/arch/tile/include/asm/futex.h b/arch/tile/include/asm/futex.h
index 5909ac3..1dd80d1 100644
--- a/arch/tile/include/asm/futex.h
+++ b/arch/tile/include/asm/futex.h
@@ -111,7 +111,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
int cmp = (encoded_op >> 24) & 15;
int oparg = (encoded_op << 8) >> 20;
int cmparg = (encoded_op << 20) >> 20;
- int uninitialized_var(val), ret;
+ int val = 0, ret;

__futex_prolog();

diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c
index 0874799..0b174a8 100644
--- a/arch/x86/kernel/apic/es7000_32.c
+++ b/arch/x86/kernel/apic/es7000_32.c
@@ -529,7 +529,7 @@ static inline int
es7000_cpu_mask_to_apicid(const struct cpumask *cpumask, unsigned int *dest_id)
{
unsigned int round = 0;
- unsigned int cpu, uninitialized_var(apicid);
+ unsigned int cpu, apicid = 0;

/*
* The cpus in the mask must all be on the apic cluster.
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 1b27de5..deefa2d 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -94,7 +94,7 @@ static void ich_force_hpet_resume(void)
static void ich_force_enable_hpet(struct pci_dev *dev)
{
u32 val;
- u32 uninitialized_var(rcba);
+ u32 rcba = 0;
int err = 0;

if (hpet_address || force_hpet_address)
@@ -184,7 +184,7 @@ static void hpet_print_force_info(void)
static void old_ich_force_hpet_resume(void)
{
u32 val;
- u32 uninitialized_var(gen_cntl);
+ u32 gen_cntl = 0;

if (!force_hpet_address || !cached_dev)
return;
@@ -206,7 +206,7 @@ static void old_ich_force_hpet_resume(void)
static void old_ich_force_enable_hpet(struct pci_dev *dev)
{
u32 val;
- u32 uninitialized_var(gen_cntl);
+ u32 gen_cntl = 0;

if (hpet_address || force_hpet_address)
return;
@@ -297,7 +297,7 @@ static void vt8237_force_hpet_resume(void)

static void vt8237_force_enable_hpet(struct pci_dev *dev)
{
- u32 uninitialized_var(val);
+ u32 val = 0;

if (hpet_address || force_hpet_address)
return;
@@ -424,7 +424,7 @@ static void nvidia_force_hpet_resume(void)

static void nvidia_force_enable_hpet(struct pci_dev *dev)
{
- u32 uninitialized_var(val);
+ u32 val = 0;

if (hpet_address || force_hpet_address)
return;
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 6f85fe0..2da199f 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1347,7 +1347,7 @@ static int kvm_age_rmapp(struct kvm *kvm, unsigned long *rmapp,
struct kvm_memory_slot *slot, unsigned long data)
{
u64 *sptep;
- struct rmap_iterator uninitialized_var(iter);
+ struct rmap_iterator iter = { };
int young = 0;

/*
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 714e2c0..e8bef5a 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -149,7 +149,7 @@ static int FNAME(walk_addr_generic)(struct guest_walker *walker,
{
int ret;
pt_element_t pte;
- pt_element_t __user *uninitialized_var(ptep_user);
+ pt_element_t __user *ptep_user = NULL;
gfn_t table_gfn;
unsigned index, pt_access, pte_access, accessed_dirty, shift;
gpa_t pte_gpa;
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 2d125be..60bb3ec 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -490,7 +490,7 @@ static bool __init numa_meminfo_cover_memory(const struct numa_meminfo *mi)

static int __init numa_register_memblks(struct numa_meminfo *mi)
{
- unsigned long uninitialized_var(pfn_align);
+ unsigned long pfn_align = 0;
int i, nid;

/* Account for nodes with cpus and no memory */
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 95fb2aa..eff1eb5 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -875,7 +875,7 @@ int m2p_add_override(unsigned long mfn, struct page *page,
{
unsigned long flags;
unsigned long pfn;
- unsigned long uninitialized_var(address);
+ unsigned long address = 0;
unsigned level;
pte_t *ptep = NULL;
int ret = 0;
@@ -938,7 +938,7 @@ int m2p_remove_override(struct page *page,
unsigned long flags;
unsigned long mfn;
unsigned long pfn;
- unsigned long uninitialized_var(address);
+ unsigned long address = 0;
unsigned level;
pte_t *ptep = NULL;
int ret = 0;
@@ -1079,8 +1079,8 @@ static int p2m_dump_show(struct seq_file *m, void *v)
[TYPE_PFN] = "pfn",
[TYPE_UNKNOWN] = "abnormal"};
unsigned long pfn, prev_pfn_type = 0, prev_pfn_level = 0;
- unsigned int uninitialized_var(prev_level);
- unsigned int uninitialized_var(prev_type);
+ unsigned int prev_level = 0;
+ unsigned int prev_type = 0;

if (!p2m_top)
return 0;
diff --git a/arch/xtensa/variants/s6000/delay.c b/arch/xtensa/variants/s6000/delay.c
index 54b2b57..99e34c7 100644
--- a/arch/xtensa/variants/s6000/delay.c
+++ b/arch/xtensa/variants/s6000/delay.c
@@ -6,8 +6,8 @@
#define LOOPS 10
void platform_calibrate_ccount(void)
{
- u32 uninitialized_var(a);
- u32 uninitialized_var(u);
+ u32 a = 0;
+ u32 u = 0;
u32 b;
u32 tstamp = S6_REG_GREG1 + S6_GREG1_GLOBAL_TIMER;
int i = LOOPS+1;
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index af4aad6..f9bec34 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -103,7 +103,7 @@ static void round_robin_cpu(unsigned int tsk_index)
cpumask_var_t tmp;
int cpu;
unsigned long min_weight = -1;
- unsigned long uninitialized_var(preferred_cpu);
+ unsigned long preferred_cpu = 0;

if (!alloc_cpumask_var(&tmp, GFP_KERNEL))
return;
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index b6cea30..36eb585 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -628,7 +628,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
u32 table_count;
struct acpi_table_header *table;
acpi_physical_address address;
- acpi_physical_address uninitialized_var(rsdt_address);
+ acpi_physical_address rsdt_address = 0;
u32 length;
u8 *table_entry;
acpi_status status;
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index e3bda07..3794a2c 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -163,7 +163,7 @@ static ssize_t ata_scsi_park_show(struct device *device,
struct ata_link *link;
struct ata_device *dev;
unsigned long flags, now;
- unsigned int uninitialized_var(msecs);
+ unsigned int msecs = 0;
int rc = 0;

ap = ata_shost_to_port(sdev->host);
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index abe4e20..8c69da0 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -937,7 +937,7 @@ static int open_tx_first(struct atm_vcc *vcc)
vcc->qos.txtp.max_pcr >= ATM_OC3_PCR);
if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr;
else {
- int uninitialized_var(pcr);
+ int pcr = 0;

if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU;
if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr,
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c
index 931769e..f4aa127 100644
--- a/drivers/block/nvme.c
+++ b/drivers/block/nvme.c
@@ -1197,7 +1197,7 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev,
struct nvme_admin_cmd cmd;
struct nvme_command c;
int status, length;
- struct nvme_iod *uninitialized_var(iod);
+ struct nvme_iod *iod = NULL;

if (!capable(CAP_SYS_ADMIN))
return -EACCES;
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c
index 3d6c067..f5adb36 100644
--- a/drivers/char/mmtimer.c
+++ b/drivers/char/mmtimer.c
@@ -616,7 +616,7 @@ static int sgi_timer_del(struct k_itimer *timr)
if (timr->it.mmtimer.clock != TIMER_OFF) {
unsigned long expires = timr->it.mmtimer.expires;
struct rb_node *n = timers[nodeid].timer_head.rb_node;
- struct mmtimer *uninitialized_var(t);
+ struct mmtimer *t = NULL;
int r = 0;

timr->it.mmtimer.clock = TIMER_OFF;
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 834e71d..c17fa73 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -1103,7 +1103,7 @@ static void context_tasklet(unsigned long data)
static int context_add_buffer(struct context *ctx)
{
struct descriptor_buffer *desc;
- dma_addr_t uninitialized_var(bus_addr);
+ dma_addr_t bus_addr = 0;
int offset;

/*
@@ -1265,7 +1265,7 @@ static int at_context_queue_packet(struct context *ctx,
struct fw_packet *packet)
{
struct fw_ohci *ohci = ctx->ohci;
- dma_addr_t d_bus, uninitialized_var(payload_bus);
+ dma_addr_t d_bus, payload_bus = 0;
struct driver_data *driver_data;
struct descriptor *d, *last;
__le32 *header;
@@ -2438,7 +2438,7 @@ static int ohci_set_config_rom(struct fw_card *card,
{
struct fw_ohci *ohci;
__be32 *next_config_rom;
- dma_addr_t uninitialized_var(next_config_rom_bus);
+ dma_addr_t next_config_rom_bus = 0;

ohci = fw_ohci(card);

@@ -2922,10 +2922,10 @@ static struct fw_iso_context *ohci_allocate_iso_context(struct fw_card *card,
int type, int channel, size_t header_size)
{
struct fw_ohci *ohci = fw_ohci(card);
- struct iso_context *uninitialized_var(ctx);
- descriptor_callback_t uninitialized_var(callback);
- u64 *uninitialized_var(channels);
- u32 *uninitialized_var(mask), uninitialized_var(regs);
+ struct iso_context *ctx = NULL;
+ descriptor_callback_t callback = 0;
+ u64 *channels = NULL;
+ u32 *mask = NULL, regs = 0;
int index, ret = -EBUSY;

spin_lock_irq(&ohci->lock);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fadcd44..a881e13 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1369,7 +1369,7 @@ static int drm_cvt_modes(struct drm_connector *connector,
const u8 empty[3] = { 0, 0, 0 };

for (i = 0; i < 4; i++) {
- int uninitialized_var(width), height;
+ int width = 0, height;
cvt = &(timing->data.other_data.data.cvt[i]);

if (!memcmp(cvt->code, empty, 3))
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 8e91083..f0d8721 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -103,7 +103,7 @@ static void i915_warn_stolen(struct drm_device *dev)
static void i915_setup_compression(struct drm_device *dev, int size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb);
+ struct drm_mm_node *compressed_fb, *compressed_llb = NULL;
unsigned long cfb_base;
unsigned long ll_base = 0;

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index 714cd8c..f7afea6 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -154,7 +154,7 @@ static int uhid_hid_get_raw(struct hid_device *hid, unsigned char rnum,
struct uhid_event *ev;
unsigned long flags;
int ret;
- size_t uninitialized_var(len);
+ size_t len = 0;
struct uhid_feature_answer_req *req;

if (!uhid->running)
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 1f58197..ba4c70d 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -251,7 +251,7 @@ static int mxs_i2c_wait_for_data(struct mxs_i2c_dev *i2c)

static int mxs_i2c_finish_read(struct mxs_i2c_dev *i2c, u8 *buf, int len)
{
- u32 uninitialized_var(data);
+ u32 data = 0;
int i;

for (i = 0; i < len; i++) {
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index f1a6796b..35d7339 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -170,7 +170,7 @@ err:
static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
{
struct device *dev = hwif->gendev.parent;
- acpi_handle uninitialized_var(dev_handle);
+ acpi_handle dev_handle = 0;
u64 pcidevfn;
acpi_handle chan_handle;
int err;
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index fac3d9d..936dd6a 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -581,7 +581,7 @@ static int ide_delayed_transfer_pc(ide_drive_t *drive)

static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
{
- struct ide_atapi_pc *uninitialized_var(pc);
+ struct ide_atapi_pc *pc = NULL;
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
ide_expiry_t *expiry;
diff --git a/drivers/ide/ide-io-std.c b/drivers/ide/ide-io-std.c
index 1976397..c947ed9 100644
--- a/drivers/ide/ide-io-std.c
+++ b/drivers/ide/ide-io-std.c
@@ -172,7 +172,7 @@ void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;

if (io_32bit) {
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

if ((io_32bit & 2) && !mmio) {
local_irq_save(flags);
@@ -216,7 +216,7 @@ void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;

if (io_32bit) {
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

if ((io_32bit & 2) && !mmio) {
local_irq_save(flags);
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 177db6d..4c550c7 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -613,12 +613,12 @@ static int drive_is_ready(ide_drive_t *drive)
void ide_timer_expiry (unsigned long data)
{
ide_hwif_t *hwif = (ide_hwif_t *)data;
- ide_drive_t *uninitialized_var(drive);
+ ide_drive_t *drive = NULL;
ide_handler_t *handler;
unsigned long flags;
int wait = -1;
int plug_device = 0;
- struct request *uninitialized_var(rq_in_flight);
+ struct request *rq_in_flight = NULL;

spin_lock_irqsave(&hwif->lock, flags);

@@ -771,13 +771,13 @@ irqreturn_t ide_intr (int irq, void *dev_id)
{
ide_hwif_t *hwif = (ide_hwif_t *)dev_id;
struct ide_host *host = hwif->host;
- ide_drive_t *uninitialized_var(drive);
+ ide_drive_t *drive = NULL;
ide_handler_t *handler;
unsigned long flags;
ide_startstop_t startstop;
irqreturn_t irq_ret = IRQ_NONE;
int plug_device = 0;
- struct request *uninitialized_var(rq_in_flight);
+ struct request *rq_in_flight = NULL;

if (host->host_flags & IDE_HFLAG_SERIALIZE) {
if (hwif != host->cur_port)
diff --git a/drivers/ide/ide-sysfs.c b/drivers/ide/ide-sysfs.c
index 883ffac..8fcc0ba 100644
--- a/drivers/ide/ide-sysfs.c
+++ b/drivers/ide/ide-sysfs.c
@@ -113,7 +113,7 @@ static struct device_attribute *ide_port_attrs[] = {

int ide_sysfs_register_port(ide_hwif_t *hwif)
{
- int i, uninitialized_var(rc);
+ int i, rc = 0;

for (i = 0; ide_port_attrs[i]; i++) {
rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 729428e..ebf97d1 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -226,7 +226,7 @@ void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd,
ide_hwif_t *hwif = drive->hwif;
struct scatterlist *sg = hwif->sg_table;
struct scatterlist *cursg = cmd->cursg;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;
struct page *page;
unsigned int offset;
u8 *buf;
diff --git a/drivers/ide/umc8672.c b/drivers/ide/umc8672.c
index 3aa0fea..3f96794 100644
--- a/drivers/ide/umc8672.c
+++ b/drivers/ide/umc8672.c
@@ -107,7 +107,7 @@ static void umc_set_speeds(u8 speeds[])
static void umc_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
ide_hwif_t *mate = hwif->mate;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;
const u8 pio = drive->pio_mode - XFER_PIO_0;

printk("%s: setting umc8672 to PIO mode%d (speed %d)\n",
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 0cb0007..d3c144f 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1386,7 +1386,7 @@ ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
struct ib_device *device;
struct ib_pd *pd = NULL;
struct ib_xrcd *xrcd = NULL;
- struct ib_uobject *uninitialized_var(xrcd_uobj);
+ struct ib_uobject *xrcd_uobj = NULL;
struct ib_cq *scq = NULL, *rcq = NULL;
struct ib_srq *srq = NULL;
struct ib_qp *qp;
@@ -1573,7 +1573,7 @@ ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
struct ib_udata udata;
struct ib_uqp_object *obj;
struct ib_xrcd *xrcd;
- struct ib_uobject *uninitialized_var(xrcd_uobj);
+ struct ib_uobject *xrcd_uobj = NULL;
struct ib_qp *qp;
struct ib_qp_open_attr attr;
int ret;
@@ -2475,7 +2475,7 @@ static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
struct ib_usrq_object *obj;
struct ib_pd *pd;
struct ib_srq *srq;
- struct ib_uobject *uninitialized_var(xrcd_uobj);
+ struct ib_uobject *xrcd_uobj = NULL;
struct ib_srq_init_attr attr;
int ret;

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 30f199e..4dfdbc1 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -314,8 +314,8 @@ int ib_destroy_srq(struct ib_srq *srq)
{
struct ib_pd *pd;
enum ib_srq_type srq_type;
- struct ib_xrcd *uninitialized_var(xrcd);
- struct ib_cq *uninitialized_var(cq);
+ struct ib_xrcd *xrcd = NULL;
+ struct ib_cq *cq = NULL;
int ret;

if (atomic_read(&srq->usecnt))
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index 6de8463..3b06090 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -351,7 +351,7 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr)
{
int err = 0;
- u8 uninitialized_var(t3_wr_flit_cnt);
+ u8 t3_wr_flit_cnt = 0;
enum t3_wr_opcode t3_wr_opcode = 0;
enum t3_wr_flags t3_wr_flags;
struct iwch_qp *qhp;
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 19e0637..4b4021e 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -2187,12 +2187,12 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
int nreq;
int err = 0;
unsigned ind;
- int uninitialized_var(stamp);
- int uninitialized_var(size);
- unsigned uninitialized_var(seglen);
+ int stamp = 0;
+ int size = 0;
+ unsigned seglen = 0;
__be32 dummy;
__be32 *lso_wqe;
- __be32 uninitialized_var(lso_hdr_sz);
+ __be32 lso_hdr_sz = 0;
__be32 blh;
int i;

diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 26a6845..e391771 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1617,8 +1617,8 @@ int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
* without initializing f0 and size0, and they are in fact
* never used uninitialized.
*/
- int uninitialized_var(size0);
- u32 uninitialized_var(f0);
+ int size0 = 0;
+ u32 f0 = 0;
int ind;
u8 op0 = 0;

@@ -1818,7 +1818,7 @@ int mthca_tavor_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
* without initializing size0, and it is in fact never used
* uninitialized.
*/
- int uninitialized_var(size0);
+ int size0 = 0;
int ind;
void *wqe;
void *prev_wqe;
@@ -1932,8 +1932,8 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
* without initializing f0 and size0, and they are in fact
* never used uninitialized.
*/
- int uninitialized_var(size0);
- u32 uninitialized_var(f0);
+ int size0 = 0;
+ u32 f0 = 0;
int ind;
u8 op0 = 0;

diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
index 59df2e7..86bde48 100644
--- a/drivers/input/serio/serio_raw.c
+++ b/drivers/input/serio/serio_raw.c
@@ -163,7 +163,7 @@ static ssize_t serio_raw_read(struct file *file, char __user *buffer,
{
struct serio_raw_client *client = file->private_data;
struct serio_raw *serio_raw = client->serio_raw;
- char uninitialized_var(c);
+ char c = 0;
ssize_t read = 0;
int error;

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index d4a4cd4..328aa81 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1789,7 +1789,7 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
unsigned long nr_pages, int prot)
{
struct dma_pte *first_pte = NULL, *pte = NULL;
- phys_addr_t uninitialized_var(pteval);
+ phys_addr_t pteval = 0;
int addr_width = agaw_to_width(domain->agaw) - VTD_PAGE_SHIFT;
unsigned long sg_res;
unsigned int largepage_lvl = 0;
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c
index f55fc5d..cb0d8c7 100644
--- a/drivers/iommu/omap-iommu-debug.c
+++ b/drivers/iommu/omap-iommu-debug.c
@@ -220,7 +220,7 @@ static ssize_t debug_read_mmap(struct file *file, char __user *userbuf,
struct omap_iommu *obj = dev_to_omap_iommu(dev);
char *p, *buf;
struct iovm_struct *tmp;
- int uninitialized_var(i);
+ int i = 0;
ssize_t bytes;

buf = (char *)__get_free_page(GFP_KERNEL);
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index a649f14..6be68b4 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -1155,8 +1155,8 @@ static int tegra_smmu_probe(struct platform_device *pdev)
struct smmu_device *smmu;
struct device *dev = &pdev->dev;
int i, asids, err = 0;
- dma_addr_t uninitialized_var(base);
- size_t bytes, uninitialized_var(size);
+ dma_addr_t base = 0;
+ size_t bytes, size = 0;

if (smmu_handle)
return -EIO;
diff --git a/drivers/isdn/hardware/eicon/debug.c b/drivers/isdn/hardware/eicon/debug.c
index b5226af..5f672d0 100644
--- a/drivers/isdn/hardware/eicon/debug.c
+++ b/drivers/isdn/hardware/eicon/debug.c
@@ -1187,7 +1187,7 @@ int SuperTraceASSIGN(void *AdapterHandle, byte *data) {

if ((features[0] & DIVA_XDI_EXTENDED_FEATURES_VALID) &&
(features[0] & DIVA_XDI_EXTENDED_FEATURE_MANAGEMENT_DMA)) {
- dword uninitialized_var(rx_dma_magic);
+ dword rx_dma_magic = 0;
if ((pC->dma_handle = diva_get_dma_descriptor(pC->request, &rx_dma_magic)) >= 0) {
pC->xbuffer[0] = LLI;
pC->xbuffer[1] = 8;
diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index ff4a0bc..0354f1b 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -408,7 +408,7 @@ static ssize_t write(struct file *file, const char __user *in,
struct lguest *lg = file->private_data;
const unsigned long __user *input = (const unsigned long __user *)in;
unsigned long req;
- struct lg_cpu *uninitialized_var(cpu);
+ struct lg_cpu *cpu = NULL;
unsigned int cpu_id = *off;

/* The first value tells us what this request is. */
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index afd9598..d371ecd 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1615,7 +1615,7 @@ static int ctl_ioctl(uint command, struct dm_ioctl __user *user)
int r = 0;
int wipe_buffer;
unsigned int cmd;
- struct dm_ioctl *uninitialized_var(param);
+ struct dm_ioctl *param = NULL;
ioctl_fn fn = NULL;
size_t input_param_size;

diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 3ac4156..8c7da1d 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -552,7 +552,7 @@ static int persistent_read_metadata(struct dm_exception_store *store,
chunk_t old, chunk_t new),
void *callback_context)
{
- int r, uninitialized_var(new_snapshot);
+ int r, new_snapshot = 0;
struct pstore *ps = get_info(store);

/*
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 100368e..598d5d9 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -459,7 +459,7 @@ int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,
struct dm_dev **result)
{
int r;
- dev_t uninitialized_var(dev);
+ dev_t dev = 0;
struct dm_dev_internal *dd;
unsigned int major, minor;
struct dm_table *t = ti->table;
@@ -689,7 +689,7 @@ static int validate_hardware_logical_block_alignment(struct dm_table *table,
*/
unsigned short remaining = 0;

- struct dm_target *uninitialized_var(ti);
+ struct dm_target *ti = NULL;
struct queue_limits ti_limits;
unsigned i = 0;

@@ -1230,7 +1230,7 @@ static int count_device(struct dm_target *ti, struct dm_dev *dev,
*/
bool dm_table_has_no_data_devices(struct dm_table *table)
{
- struct dm_target *uninitialized_var(ti);
+ struct dm_target *ti = NULL;
unsigned i = 0, num_devices = 0;

while (i < dm_table_get_num_targets(table)) {
@@ -1253,7 +1253,7 @@ bool dm_table_has_no_data_devices(struct dm_table *table)
int dm_calculate_queue_limits(struct dm_table *table,
struct queue_limits *limits)
{
- struct dm_target *uninitialized_var(ti);
+ struct dm_target *ti = NULL;
struct queue_limits ti_limits;
unsigned i = 0;

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index c5439dc..fc86ed2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1865,7 +1865,7 @@ static void raid5_end_write_request(struct bio *bi, int error)
struct stripe_head *sh = bi->bi_private;
struct r5conf *conf = sh->raid_conf;
int disks = sh->disks, i;
- struct md_rdev *uninitialized_var(rdev);
+ struct md_rdev *rdev = NULL;
int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags);
sector_t first_bad;
int bad_sectors;
diff --git a/drivers/media/dvb-frontends/af9013.c b/drivers/media/dvb-frontends/af9013.c
index a204f28..cb4022d 100644
--- a/drivers/media/dvb-frontends/af9013.c
+++ b/drivers/media/dvb-frontends/af9013.c
@@ -419,7 +419,7 @@ static int af9013_statistics_snr_result(struct dvb_frontend *fe)
int ret, i, len;
u8 buf[3], tmp;
u32 snr_val;
- const struct af9013_snr *uninitialized_var(snr_lut);
+ const struct af9013_snr *snr_lut = NULL;

dev_dbg(&state->i2c->dev, "%s:\n", __func__);

diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c
index 464ad87..77b7029 100644
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -714,7 +714,7 @@ static int af9033_read_snr(struct dvb_frontend *fe, u16 *snr)
int ret, i, len;
u8 buf[3], tmp;
u32 snr_val;
- const struct val_snr *uninitialized_var(snr_lut);
+ const struct val_snr *snr_lut = NULL;

/* read value */
ret = af9033_rd_regs(state, 0x80002c, buf, 3);
diff --git a/drivers/media/dvb-frontends/cxd2820r_core.c b/drivers/media/dvb-frontends/cxd2820r_core.c
index 9b658c1..d8ae3ac 100644
--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -567,7 +567,7 @@ static int cxd2820r_get_frontend_algo(struct dvb_frontend *fe)
static void cxd2820r_release(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
- int uninitialized_var(ret); /* silence compiler warning */
+ int ret = 0; /* silence compiler warning */

dev_dbg(&priv->i2c->dev, "%s\n", __func__);

diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index 15bf3ea..a909c55 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -1082,7 +1082,7 @@ static const struct vm_operations_struct isp_video_queue_vm_ops = {
int omap3isp_video_queue_mmap(struct isp_video_queue *queue,
struct vm_area_struct *vma)
{
- struct isp_video_buffer *uninitialized_var(buf);
+ struct isp_video_buffer *buf = NULL;
unsigned long size;
unsigned int i;
int ret = 0;
diff --git a/drivers/media/tuners/tda18212.c b/drivers/media/tuners/tda18212.c
index 5d9f028..e4a0334 100644
--- a/drivers/media/tuners/tda18212.c
+++ b/drivers/media/tuners/tda18212.c
@@ -277,7 +277,7 @@ struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
{
struct tda18212_priv *priv = NULL;
int ret;
- u8 uninitialized_var(val);
+ u8 val = 0;

priv = kzalloc(sizeof(struct tda18212_priv), GFP_KERNEL);
if (priv == NULL)
diff --git a/drivers/media/tuners/tda18218.c b/drivers/media/tuners/tda18218.c
index 1819853..531ce11 100644
--- a/drivers/media/tuners/tda18218.c
+++ b/drivers/media/tuners/tda18218.c
@@ -277,7 +277,7 @@ struct dvb_frontend *tda18218_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, struct tda18218_config *cfg)
{
struct tda18218_priv *priv = NULL;
- u8 uninitialized_var(val);
+ u8 val = 0;
int ret;
/* chip default registers values */
static u8 def_regs[] = {
diff --git a/drivers/media/usb/dvb-usb-v2/af9015.c b/drivers/media/usb/dvb-usb-v2/af9015.c
index 3d7526e..0fa1a32 100644
--- a/drivers/media/usb/dvb-usb-v2/af9015.c
+++ b/drivers/media/usb/dvb-usb-v2/af9015.c
@@ -208,7 +208,7 @@ static int af9015_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
struct af9015_state *state = d_to_priv(d);
int ret = 0, i = 0;
u16 addr;
- u8 uninitialized_var(mbox), addr_len;
+ u8 mbox = 0, addr_len;
struct req_t req;

/*
diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
index ef87229..643c491 100644
--- a/drivers/media/usb/dvb-usb/dib0700_core.c
+++ b/drivers/media/usb/dvb-usb/dib0700_core.c
@@ -675,7 +675,7 @@ static void dib0700_rc_urb_completion(struct urb *purb)
{
struct dvb_usb_device *d = purb->context;
struct dib0700_rc_response *poll_reply;
- u32 uninitialized_var(keycode);
+ u32 keycode = 0;
u8 toggle;

deb_info("%s()\n", __func__);
diff --git a/drivers/media/usb/gspca/vicam.c b/drivers/media/usb/gspca/vicam.c
index d6890bc..20a5310 100644
--- a/drivers/media/usb/gspca/vicam.c
+++ b/drivers/media/usb/gspca/vicam.c
@@ -239,7 +239,7 @@ static int sd_init(struct gspca_dev *gspca_dev)
{
int ret;
const struct ihex_binrec *rec;
- const struct firmware *uninitialized_var(fw);
+ const struct firmware *fw = NULL;
u8 *firmware_buf;

ret = request_ihex_firmware(&fw, VICAM_FIRMWARE,
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 57c3076..a13a731 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -702,9 +702,9 @@ static void uvc_video_stats_decode(struct uvc_streaming *stream,
unsigned int header_size;
bool has_pts = false;
bool has_scr = false;
- u16 uninitialized_var(scr_sof);
- u32 uninitialized_var(scr_stc);
- u32 uninitialized_var(pts);
+ u16 scr_sof = 0;
+ u32 scr_stc = 0;
+ u32 pts = 0;

if (stream->stats.stream.nb_frames == 0 &&
stream->stats.frame.nb_packets == 0)
@@ -1588,7 +1588,7 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags)
struct usb_host_endpoint *best_ep = NULL;
unsigned int best_psize = UINT_MAX;
unsigned int bandwidth;
- unsigned int uninitialized_var(altsetting);
+ unsigned int altsetting = 0;
int intfnum = stream->intfnum;

/* Isochronous endpoint, select the alternate setting. */
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index c37d375..0266e29 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -315,7 +315,7 @@ static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
}

while (length) {
- unsigned int uninitialized_var(p_off);
+ unsigned int p_off = 0;

if (host->req->long_data) {
pg = nth_page(sg_page(&host->req->sg),
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index 7bafa72..acdc5f8 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -200,7 +200,7 @@ static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
host->block_pos);

while (length) {
- unsigned int uninitialized_var(p_off);
+ unsigned int p_off = 0;

if (host->req->long_data) {
pg = nth_page(sg_page(&host->req->sg),
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 7922adb..2ed1c0f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -175,7 +175,7 @@ static void sdhci_disable_card_detection(struct sdhci_host *host)
static void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
- u32 uninitialized_var(ier);
+ u32 ier = 0;

if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
@@ -311,7 +311,7 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
{
unsigned long flags;
size_t blksize, len, chunk;
- u32 uninitialized_var(scratch);
+ u32 scratch = 0;
u8 *buf;

DBG("PIO reading\n");
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index b7cfe0d..ab64367 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -167,7 +167,7 @@ void __nand_calculate_ecc(const unsigned char *buf, unsigned int eccsize,
/* rp0..rp15..rp17 are the various accumulated parities (per byte) */
uint32_t rp0, rp1, rp2, rp3, rp4, rp5, rp6, rp7;
uint32_t rp8, rp9, rp10, rp11, rp12, rp13, rp14, rp15, rp16;
- uint32_t uninitialized_var(rp17); /* to make compiler happy */
+ uint32_t rp17 = 0; /* to make compiler happy */
uint32_t par; /* the cumulative parity for all data */
uint32_t tmppar; /* the cumulative parity for this iteration;
for rp12, rp14 and rp16 at the end of the
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 295e4be..4f2e5c3 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -234,7 +234,7 @@ static int s3c2410_nand_setrate(struct s3c2410_nand_info *info)
int tacls_max = (info->cpu_type == TYPE_S3C2412) ? 8 : 4;
int tacls, twrph0, twrph1;
unsigned long clkrate = clk_get_rate(info->clk);
- unsigned long uninitialized_var(set), cfg, uninitialized_var(mask);
+ unsigned long set = 0, cfg, mask = 0;
unsigned long flags;

/* calculate the timing information for the controller */
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index fec406b..114af08 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -821,7 +821,7 @@ out_unlock:
static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
int pnum, int *vid, unsigned long long *sqnum)
{
- long long uninitialized_var(ec);
+ long long ec = 0;
int err, bitflips = 0, vol_id = -1, ec_err = 0;

dbg_bld("scan PEB %d", pnum);
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 0e11671..96b3bb1 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -374,7 +374,7 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
{
int err, pnum, scrub = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
- uint32_t uninitialized_var(crc);
+ uint32_t crc = 0;

err = leb_read_lock(ubi, vol_id, lnum);
if (err)
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index da7b449..7a79595 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -994,7 +994,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
int cancel)
{
int err, scrubbing = 0, torture = 0, protect = 0, erroneous = 0;
- int vol_id = -1, uninitialized_var(lnum);
+ int vol_id = -1, lnum = 0;
#ifdef CONFIG_MTD_UBI_FASTMAP
int anchor = wrk->anchor;
#endif
diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
index 325391d..077ebca 100644
--- a/drivers/net/dsa/mv88e6060.c
+++ b/drivers/net/dsa/mv88e6060.c
@@ -224,7 +224,7 @@ static void mv88e6060_poll_link(struct dsa_switch *ds)

for (i = 0; i < DSA_MAX_PORTS; i++) {
struct net_device *dev;
- int uninitialized_var(port_status);
+ int port_status = 0;
int link;
int speed;
int duplex;
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index a2c62c2..aaadbff 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -359,7 +359,7 @@ void mv88e6xxx_poll_link(struct dsa_switch *ds)

for (i = 0; i < DSA_MAX_PORTS; i++) {
struct net_device *dev;
- int uninitialized_var(port_status);
+ int port_status = 0;
int link;
int speed;
int duplex;
diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index d431070..1871a04 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -1432,7 +1432,7 @@ bnx2_test_and_disable_2g5(struct bnx2 *bp)
static void
bnx2_enable_forced_2g5(struct bnx2 *bp)
{
- u32 uninitialized_var(bmcr);
+ u32 bmcr = 0;
int err;

if (!(bp->phy_flags & BNX2_PHY_FLAG_2_5G_CAPABLE))
@@ -1476,7 +1476,7 @@ bnx2_enable_forced_2g5(struct bnx2 *bp)
static void
bnx2_disable_forced_2g5(struct bnx2 *bp)
{
- u32 uninitialized_var(bmcr);
+ u32 bmcr = 0;
int err;

if (!(bp->phy_flags & BNX2_PHY_FLAG_2_5G_CAPABLE))
diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c
index de50547..3eea36c 100644
--- a/drivers/net/ethernet/neterion/s2io.c
+++ b/drivers/net/ethernet/neterion/s2io.c
@@ -7331,7 +7331,7 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
int ring_no = ring_data->ring_no;
u16 l3_csum, l4_csum;
unsigned long long err = rxdp->Control_1 & RXD_T_CODE;
- struct lro *uninitialized_var(lro);
+ struct lro *lro = NULL;
u8 err_mask;
struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;

diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c
index 6407d0d..7ef0842 100644
--- a/drivers/net/ethernet/qlogic/qla3xxx.c
+++ b/drivers/net/ethernet/qlogic/qla3xxx.c
@@ -3778,7 +3778,7 @@ static int __devinit ql3xxx_probe(struct pci_dev *pdev,
struct net_device *ndev = NULL;
struct ql3_adapter *qdev = NULL;
static int cards_found;
- int uninitialized_var(pci_using_dac), err;
+ int pci_using_dac = 0, err;

err = pci_enable_device(pdev);
if (err) {
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index e7ff886..1abe360 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -5669,7 +5669,7 @@ static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
{
struct skb_shared_info *info = skb_shinfo(skb);
unsigned int cur_frag, entry;
- struct TxDesc * uninitialized_var(txd);
+ struct TxDesc * txd = NULL;
struct device *d = &tp->pci_dev->dev;

entry = tp->cur_tx;
diff --git a/drivers/net/ethernet/sis/sis900.c b/drivers/net/ethernet/sis/sis900.c
index fb9f6b3..1f48e01 100644
--- a/drivers/net/ethernet/sis/sis900.c
+++ b/drivers/net/ethernet/sis/sis900.c
@@ -1319,7 +1319,7 @@ static void sis900_timer(unsigned long data)
u16 status;

if (!sis_priv->autong_complete){
- int uninitialized_var(speed), duplex = 0;
+ int speed = 0, duplex = 0;

sis900_read_mode(net_dev, &speed, &duplex);
if (duplex){
diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
index c8251be..e38e718 100644
--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -2305,7 +2305,7 @@ static int cas_rx_ringN(struct cas *cp, int ring, int budget)
drops = 0;
while (1) {
struct cas_rx_comp *rxc = rxcs + entry;
- struct sk_buff *uninitialized_var(skb);
+ struct sk_buff *skb = NULL;
int type, len;
u64 words[4];
int i, dring;
diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 275b430..c45fdab 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -428,7 +428,7 @@ static int serdes_init_niu_1g_serdes(struct niu *np)
struct niu_link_config *lp = &np->link_config;
u16 pll_cfg, pll_sts;
int max_retry = 100;
- u64 uninitialized_var(sig), mask, val;
+ u64 sig = 0, mask, val;
u32 tx_cfg, rx_cfg;
unsigned long i;
int err;
@@ -525,7 +525,7 @@ static int serdes_init_niu_10g_serdes(struct niu *np)
struct niu_link_config *lp = &np->link_config;
u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
int max_retry = 100;
- u64 uninitialized_var(sig), mask, val;
+ u64 sig = 0, mask, val;
unsigned long i;
int err;

@@ -713,7 +713,7 @@ static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)

static int esr_reset(struct niu *np)
{
- u32 uninitialized_var(reset);
+ u32 reset = 0;
int err;

err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c
index feacc3b..2c0c8bd 100644
--- a/drivers/net/wan/z85230.c
+++ b/drivers/net/wan/z85230.c
@@ -707,7 +707,7 @@ EXPORT_SYMBOL(z8530_nop);
irqreturn_t z8530_interrupt(int irq, void *dev_id)
{
struct z8530_dev *dev=dev_id;
- u8 uninitialized_var(intr);
+ u8 intr = 0;
static volatile int locker=0;
int work=0;
struct z8530_irqhandler *irqs;
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index f90b5db..5a426e6 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1475,7 +1475,7 @@ static int ath6kl_init_upload(struct ath6kl *ar)

int ath6kl_init_hw_params(struct ath6kl *ar)
{
- const struct ath6kl_hw *uninitialized_var(hw);
+ const struct ath6kl_hw *hw = NULL;
int i;

for (i = 0; i < ARRAY_SIZE(hw_list); i++) {
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index fad3ccd..cf1325b 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -222,7 +222,7 @@ static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 cl
struct ath_hw *ah = (struct ath_hw *) hw_priv;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;
u32 val;

if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) {
diff --git a/drivers/net/wireless/b43/debugfs.c b/drivers/net/wireless/b43/debugfs.c
index e807bd9..755e946 100644
--- a/drivers/net/wireless/b43/debugfs.c
+++ b/drivers/net/wireless/b43/debugfs.c
@@ -506,7 +506,7 @@ static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
struct b43_wldev *dev;
struct b43_debugfs_fops *dfops;
struct b43_dfs_file *dfile;
- ssize_t uninitialized_var(ret);
+ ssize_t ret = 0;
char *buf;
const size_t bufsize = 1024 * 16; /* 16 kiB buffer */
const size_t buforder = get_order(bufsize);
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 777cd74..6797228 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -50,7 +50,7 @@
static u32 b43_dma_address(struct b43_dma *dma, dma_addr_t dmaaddr,
enum b43_addrtype addrtype)
{
- u32 uninitialized_var(addr);
+ u32 addr = 0;

switch (addrtype) {
case B43_DMA_ADDR_LOW:
diff --git a/drivers/net/wireless/b43/lo.c b/drivers/net/wireless/b43/lo.c
index 916123a..e33cfaf 100644
--- a/drivers/net/wireless/b43/lo.c
+++ b/drivers/net/wireless/b43/lo.c
@@ -742,7 +742,7 @@ struct b43_lo_calib *b43_calibrate_lo_setting(struct b43_wldev *dev,
};
int max_rx_gain;
struct b43_lo_calib *cal;
- struct lo_g_saved_values uninitialized_var(saved_regs);
+ struct lo_g_saved_values saved_regs = { };
/* Values from the "TXCTL Register and Value Table" */
u16 txctl_reg;
u16 txctl_value;
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index c5a99c8..b931b88 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3705,7 +3705,7 @@ static int b43_switch_band(struct b43_wl *wl, struct ieee80211_channel *chan)
struct b43_wldev *down_dev;
struct b43_wldev *d;
int err;
- bool uninitialized_var(gmode);
+ bool gmode = 0;
int prev_status;

/* Find a device and PHY which supports the band. */
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 3c35382..068b1e2 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -4569,7 +4569,7 @@ static int b43_nphy_rev2_cal_rx_iq(struct b43_wldev *dev,
u8 rfctl[2];
u8 afectl_core;
u16 tmp[6];
- u16 uninitialized_var(cur_hpf1), uninitialized_var(cur_hpf2), cur_lna;
+ u16 cur_hpf1 = 0, cur_hpf2 = 0, cur_lna;
u32 real, imag;
enum ieee80211_band band;

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 136510e..ab5542b 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -427,10 +427,10 @@ int b43_generate_txhdr(struct b43_wldev *dev,
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
(rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
unsigned int len;
- struct ieee80211_hdr *uninitialized_var(hdr);
+ struct ieee80211_hdr *hdr = NULL;
int rts_rate, rts_rate_fb;
int rts_rate_ofdm, rts_rate_fb_ofdm;
- struct b43_plcp_hdr6 *uninitialized_var(plcp);
+ struct b43_plcp_hdr6 *plcp = NULL;
struct ieee80211_rate *rts_cts_rate;

rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info);
@@ -441,7 +441,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);

if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
- struct ieee80211_cts *uninitialized_var(cts);
+ struct ieee80211_cts *cts = NULL;

switch (dev->fw.hdr_format) {
case B43_FW_HDR_598:
@@ -463,7 +463,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
mac_ctl |= B43_TXH_MAC_SENDCTS;
len = sizeof(struct ieee80211_cts);
} else {
- struct ieee80211_rts *uninitialized_var(rts);
+ struct ieee80211_rts *rts = NULL;

switch (dev->fw.hdr_format) {
case B43_FW_HDR_598:
@@ -659,8 +659,8 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
__le16 fctl;
u16 phystat0, phystat3;
- u16 uninitialized_var(chanstat), uninitialized_var(mactime);
- u32 uninitialized_var(macstat);
+ u16 chanstat = 0, mactime = 0;
+ u32 macstat = 0;
u16 chanid;
u16 phytype;
int padding, rate_idx;
diff --git a/drivers/net/wireless/b43legacy/debugfs.c b/drivers/net/wireless/b43legacy/debugfs.c
index 1965edb..265533e 100644
--- a/drivers/net/wireless/b43legacy/debugfs.c
+++ b/drivers/net/wireless/b43legacy/debugfs.c
@@ -203,7 +203,7 @@ static ssize_t b43legacy_debugfs_read(struct file *file, char __user *userbuf,
struct b43legacy_wldev *dev;
struct b43legacy_debugfs_fops *dfops;
struct b43legacy_dfs_file *dfile;
- ssize_t uninitialized_var(ret);
+ ssize_t ret = 0;
char *buf;
const size_t bufsize = 1024 * 16; /* 16 KiB buffer */
const size_t buforder = get_order(bufsize);
diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index 18e208e..8834f6c 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -2588,7 +2588,7 @@ static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev)
static int b43legacy_switch_phymode(struct b43legacy_wl *wl,
unsigned int new_mode)
{
- struct b43legacy_wldev *uninitialized_var(up_dev);
+ struct b43legacy_wldev *up_dev = NULL;
struct b43legacy_wldev *down_dev;
int err;
bool gmode = false;
diff --git a/drivers/net/wireless/iwlegacy/3945.c b/drivers/net/wireless/iwlegacy/3945.c
index 87e5398..6144111 100644
--- a/drivers/net/wireless/iwlegacy/3945.c
+++ b/drivers/net/wireless/iwlegacy/3945.c
@@ -2092,7 +2092,7 @@ il3945_txpower_set_from_eeprom(struct il_priv *il)

/* set tx power value for all OFDM rates */
for (rate_idx = 0; rate_idx < IL_OFDM_RATES; rate_idx++) {
- s32 uninitialized_var(power_idx);
+ s32 power_idx = 0;
int rc;

/* use channel group's clip-power table,
diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index eac4dc8..8ccad22 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -2754,7 +2754,7 @@ il4965_hdl_tx(struct il_priv *il, struct il_rx_buf *rxb)
struct ieee80211_tx_info *info;
struct il4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
u32 status = le32_to_cpu(tx_resp->u.status);
- int uninitialized_var(tid);
+ int tid = 0;
int sta_id;
int freed;
u8 *qc = NULL;
diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
index 4bbb711..4f6040a 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
@@ -643,7 +643,7 @@ static void _rtl92cu_init_chipN_one_out_ep_priority(struct ieee80211_hw *hw,
bool wmm_enable,
u8 queue_sel)
{
- u16 uninitialized_var(value);
+ u16 value = 0;

switch (queue_sel) {
case TX_SELE_HQ:
@@ -669,8 +669,8 @@ static void _rtl92cu_init_chipN_two_out_ep_priority(struct ieee80211_hw *hw,
u8 queue_sel)
{
u16 beQ, bkQ, viQ, voQ, mgtQ, hiQ;
- u16 uninitialized_var(valueHi);
- u16 uninitialized_var(valueLow);
+ u16 valueHi = 0;
+ u16 valueLow = 0;

switch (queue_sel) {
case (TX_SELE_HQ | TX_SELE_LQ):
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index f2d6b78..3956c96 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -412,7 +412,7 @@ static void netbk_gop_frag_copy(struct xenvif *vif, struct sk_buff *skb,
* These variables are used iff get_page_ext returns true,
* in which case they are guaranteed to be initialized.
*/
- unsigned int uninitialized_var(group), uninitialized_var(idx);
+ unsigned int group = 0, idx = 0;
int foreign = get_page_ext(page, &group, &idx);
unsigned long bytes;

diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
index 06bad96..3b32784 100644
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ b/drivers/pci/pcie/aer/aerdrv_core.c
@@ -783,7 +783,7 @@ void aer_isr(struct work_struct *work)
{
struct aer_rpc *rpc = container_of(work, struct aer_rpc, dpc_handler);
struct pcie_device *p_device = rpc->rpd;
- struct aer_err_source uninitialized_var(e_src);
+ struct aer_err_source e_src = { };

mutex_lock(&rpc->rpc_mutex);
while (get_e_source(rpc, &e_src))
diff --git a/drivers/platform/x86/hdaps.c b/drivers/platform/x86/hdaps.c
index 777c7e3..8a5f76d 100644
--- a/drivers/platform/x86/hdaps.c
+++ b/drivers/platform/x86/hdaps.c
@@ -379,7 +379,7 @@ static ssize_t hdaps_variance_show(struct device *dev,
static ssize_t hdaps_temp1_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- u8 uninitialized_var(temp);
+ u8 temp = 0;
int ret;

ret = hdaps_readb_one(HDAPS_PORT_TEMP1, &temp);
@@ -392,7 +392,7 @@ static ssize_t hdaps_temp1_show(struct device *dev,
static ssize_t hdaps_temp2_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- u8 uninitialized_var(temp);
+ u8 temp = 0;
int ret;

ret = hdaps_readb_one(HDAPS_PORT_TEMP2, &temp);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 8e927b9..e59148d 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -1029,7 +1029,7 @@ extern void do_reipl_asm(__u32 schid);
/* Make sure all subchannels are quiet before we re-ipl an lpar. */
void reipl_ccw_dev(struct ccw_dev_id *devid)
{
- struct subchannel_id uninitialized_var(schid);
+ struct subchannel_id schid = { };

s390_reset_system(NULL, NULL);
if (reipl_find_schid(devid, &schid) != 0)
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 13aeca3..0821b17 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -4268,7 +4268,7 @@ static int __devinit adapter_sg_tables_alloc(struct AdapterCtlBlk *acb)
const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
int srb_idx = 0;
unsigned i = 0;
- struct SGentry *uninitialized_var(ptr);
+ struct SGentry *ptr = NULL;

for (i = 0; i < DC395x_MAX_SRB_CNT; i++)
acb->srb_array[i].segment_x = NULL;
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index bf54aaf..8c1c31c 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3874,7 +3874,7 @@ static int process_oq(struct pm8001_hba_info *pm8001_ha)
{
struct outbound_queue_table *circularQ;
void *pMsg1 = NULL;
- u8 uninitialized_var(bc);
+ u8 bc = 0;
u32 ret = MPI_IO_STATUS_FAIL;
unsigned long flags;

diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
index 147dfa8..71ae8cb 100644
--- a/drivers/spi/spi-davinci.c
+++ b/drivers/spi/spi-davinci.c
@@ -529,7 +529,7 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
u32 errors = 0;
struct davinci_spi_config *spicfg;
struct davinci_spi_platform_data *pdata;
- unsigned uninitialized_var(rx_buf_count);
+ unsigned rx_buf_count = 0;
void *dummy_buf = NULL;
struct scatterlist sg_rx, sg_tx;

diff --git a/drivers/ssb/driver_chipcommon.c b/drivers/ssb/driver_chipcommon.c
index e9d2ca1..90446c1 100644
--- a/drivers/ssb/driver_chipcommon.c
+++ b/drivers/ssb/driver_chipcommon.c
@@ -117,7 +117,7 @@ void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
static enum ssb_clksrc chipco_pctl_get_slowclksrc(struct ssb_chipcommon *cc)
{
struct ssb_bus *bus = cc->dev->bus;
- u32 uninitialized_var(tmp);
+ u32 tmp = 0;

if (cc->dev->id.revision < 6) {
if (bus->bustype == SSB_BUSTYPE_SSB ||
@@ -147,7 +147,7 @@ static enum ssb_clksrc chipco_pctl_get_slowclksrc(struct ssb_chipcommon *cc)
/* Get maximum or minimum (depending on get_max flag) slowclock frequency. */
static int chipco_pctl_clockfreqlimit(struct ssb_chipcommon *cc, int get_max)
{
- int uninitialized_var(limit);
+ int limit = 0;
enum ssb_clksrc clocksrc;
int divisor = 1;
u32 tmp;
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c
index 09a9d35..d26493e 100644
--- a/drivers/staging/zsmalloc/zsmalloc-main.c
+++ b/drivers/staging/zsmalloc/zsmalloc-main.c
@@ -555,7 +555,7 @@ static void init_zspage(struct page *first_page, struct size_class *class)
static struct page *alloc_zspage(struct size_class *class, gfp_t flags)
{
int i, error;
- struct page *first_page = NULL, *uninitialized_var(prev_page);
+ struct page *first_page = NULL, *prev_page = NULL;

/*
* Allocate individual pages and link them together as:
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 0a6a0bc..b73d1c5 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -3698,7 +3698,7 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
struct cyclades_card *card;
void __iomem *addr0 = NULL, *addr2 = NULL;
char *card_name = NULL;
- u32 uninitialized_var(mailbox);
+ u32 mailbox = 0;
unsigned int device_id, nchan = 0, card_no, i, j;
unsigned char plx_ver;
int retval, irq;
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index d7492e1..92ead49 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -1551,7 +1551,7 @@ static unsigned int card_count;
static int __devinit isicom_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
- unsigned int uninitialized_var(signature), index;
+ unsigned int signature = 0, index;
int retval = -EPERM;
struct isi_board *board = NULL;

diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c
index 104ae9c..caadd97 100644
--- a/drivers/usb/gadget/uvc_queue.c
+++ b/drivers/usb/gadget/uvc_queue.c
@@ -413,7 +413,7 @@ static struct vm_operations_struct uvc_vm_ops = {
static int
uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
{
- struct uvc_buffer *uninitialized_var(buffer);
+ struct uvc_buffer *buffer = NULL;
struct page *page;
unsigned long addr, start, size;
unsigned int i;
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index e19da82..edf712c 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -1167,7 +1167,7 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
struct musb_hw_ep *hw_ep = NULL;
u32 rx, tx;
int i, index;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

cppi = container_of(musb->dma_controller, struct cppi, controller);
if (cppi->irq)
diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c
index d278c5a..54c5f66 100644
--- a/drivers/usb/storage/sddr55.c
+++ b/drivers/usb/storage/sddr55.c
@@ -563,8 +563,8 @@ static int sddr55_reset(struct us_data *us)

static unsigned long sddr55_get_capacity(struct us_data *us) {

- unsigned char uninitialized_var(manufacturerID);
- unsigned char uninitialized_var(deviceID);
+ unsigned char manufacturerID = 0;
+ unsigned char deviceID = 0;
int result;
struct sddr55_card_info *info = (struct sddr55_card_info *)us->extra;

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 7f93f34..3d4ead6 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -145,7 +145,7 @@ static void handle_tx(struct vhost_net *net)
int err, wmem;
size_t hdr_size;
struct socket *sock;
- struct vhost_ubuf_ref *uninitialized_var(ubufs);
+ struct vhost_ubuf_ref *ubufs = NULL;
bool zcopy;

/* TODO: check that we are running from vhost_worker? */
@@ -364,7 +364,7 @@ err:
static void handle_rx(struct vhost_net *net)
{
struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_RX];
- unsigned uninitialized_var(in), log;
+ unsigned in = 0, log;
struct vhost_log *vq_log;
struct msghdr msg = {
.msg_name = NULL,
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 99ac2cb..419dd39 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -189,7 +189,7 @@ static int vhost_worker(void *data)
{
struct vhost_dev *dev = data;
struct vhost_work *work = NULL;
- unsigned uninitialized_var(seq);
+ unsigned seq = 0;
mm_segment_t oldfs = get_fs();

set_fs(USER_DS);
diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c
index 217678e..657b74a 100644
--- a/drivers/video/matrox/matroxfb_maven.c
+++ b/drivers/video/matrox/matroxfb_maven.c
@@ -285,7 +285,7 @@ static int matroxfb_mavenclock(const struct matrox_pll_ctl *ctl,
unsigned int* in, unsigned int* feed, unsigned int* post,
unsigned int* htotal2) {
unsigned int fvco;
- unsigned int uninitialized_var(p);
+ unsigned int p = 0;

fvco = matroxfb_PLL_mavenclock(&maven1000_pll, ctl, htotal, vtotal, in, feed, &p, htotal2);
if (!fvco)
@@ -717,8 +717,8 @@ static int maven_find_exact_clocks(unsigned int ht, unsigned int vt,

for (x = 0; x < 8; x++) {
unsigned int c;
- unsigned int uninitialized_var(a), uninitialized_var(b),
- uninitialized_var(h2);
+ unsigned int a = 0, b = 0,
+ h2 = 0;
unsigned int h = ht + 2 + x;

if (!matroxfb_mavenclock((m->mode == MATROXFB_OUTPUT_MODE_PAL) ? &maven_PAL : &maven_NTSC, h, vt, &a, &b, &c, &h2)) {
diff --git a/drivers/video/pm3fb.c b/drivers/video/pm3fb.c
index 055e527..08a4ae45 100644
--- a/drivers/video/pm3fb.c
+++ b/drivers/video/pm3fb.c
@@ -828,9 +828,9 @@ static void pm3fb_write_mode(struct fb_info *info)

wmb();
{
- unsigned char uninitialized_var(m); /* ClkPreScale */
- unsigned char uninitialized_var(n); /* ClkFeedBackScale */
- unsigned char uninitialized_var(p); /* ClkPostScale */
+ unsigned char m = 0; /* ClkPreScale */
+ unsigned char n = 0; /* ClkFeedBackScale */
+ unsigned char p = 0; /* ClkPostScale */
unsigned long pixclock = PICOS2KHZ(info->var.pixclock);

(void)pm3fb_calculate_clock(pixclock, &m, &n, &p);
diff --git a/drivers/video/riva/riva_hw.c b/drivers/video/riva/riva_hw.c
index 78fdbf5..94af75e 100644
--- a/drivers/video/riva/riva_hw.c
+++ b/drivers/video/riva/riva_hw.c
@@ -1243,8 +1243,8 @@ int CalcStateExt
)
{
int pixelDepth;
- int uninitialized_var(VClk),uninitialized_var(m),
- uninitialized_var(n), uninitialized_var(p);
+ int VClk = 0,m = 0,
+ n = 0, p = 0;

/*
* Save mode parameters.
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index e639584..d83dee8 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -206,7 +206,7 @@ int virtqueue_add_buf(struct virtqueue *_vq,
gfp_t gfp)
{
struct vring_virtqueue *vq = to_vvq(_vq);
- unsigned int i, avail, uninitialized_var(prev);
+ unsigned int i, avail, prev = 0;
int head;

START_USE(vq);
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index db47790..a973816 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -601,7 +601,7 @@ success:
static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
{
struct afs_vnode *vnode, *dir;
- struct afs_fid uninitialized_var(fid);
+ struct afs_fid fid = { };
struct dentry *parent;
struct key *key;
void *dir_version;
diff --git a/fs/afs/security.c b/fs/afs/security.c
index 8d01042..9d17142 100644
--- a/fs/afs/security.c
+++ b/fs/afs/security.c
@@ -288,7 +288,7 @@ static int afs_check_permit(struct afs_vnode *vnode, struct key *key,
int afs_permission(struct inode *inode, int mask)
{
struct afs_vnode *vnode = AFS_FS_I(inode);
- afs_access_t uninitialized_var(access);
+ afs_access_t access = 0;
struct key *key;
int ret;

diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index e280352..ba80775 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -127,7 +127,7 @@ static unsigned long create_flat_tables(
char * p = (char*)pp;
int argc = bprm->argc;
int envc = bprm->envc;
- char uninitialized_var(dummy);
+ char dummy = 0;

sp = (unsigned long *)p;
sp -= (envc + argc + 2) + 1 + (flat_argvp_envp_on_stack() ? 2 : 0);
diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c
index 60a3278..c4356b9 100644
--- a/fs/dlm/netlink.c
+++ b/fs/dlm/netlink.c
@@ -114,7 +114,7 @@ static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)

void dlm_timeout_warn(struct dlm_lkb *lkb)
{
- struct sk_buff *uninitialized_var(send_skb);
+ struct sk_buff *send_skb = NULL;
struct dlm_lock_data *data;
size_t size;
int rv;
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 2a18234..4b17ae9 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -1249,7 +1249,7 @@ int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
struct super_block *sb = dir->i_sb;
struct msdos_sb_info *sbi = MSDOS_SB(sb);
struct buffer_head *bh, *prev, *bhs[3]; /* 32*slots (672bytes) */
- struct msdos_dir_entry *uninitialized_var(de);
+ struct msdos_dir_entry *de = NULL;
int err, free_slots, i, nr_bhs;
loff_t pos, i_pos;

diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 75a20c0..834a028 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -117,7 +117,7 @@ static ssize_t fuse_conn_max_background_write(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
{
- unsigned uninitialized_var(val);
+ unsigned val = 0;
ssize_t ret;

ret = fuse_conn_limit_write(file, buf, count, ppos, &val,
@@ -154,7 +154,7 @@ static ssize_t fuse_conn_congestion_threshold_write(struct file *file,
const char __user *buf,
size_t count, loff_t *ppos)
{
- unsigned uninitialized_var(val);
+ unsigned val = 0;
ssize_t ret;

ret = fuse_conn_limit_write(file, buf, count, ppos, &val,
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index 963b2d7..6ec4e7a 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -151,7 +151,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk,
struct gfs2_log_header_host *head)
{
struct buffer_head *bh;
- struct gfs2_log_header_host uninitialized_var(lh);
+ struct gfs2_log_header_host lh = { };
const u32 nothing = 0;
u32 hash;
int error;
diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c
index a32998f..fd78706 100644
--- a/fs/hfsplus/unicode.c
+++ b/fs/hfsplus/unicode.c
@@ -350,7 +350,7 @@ int hfsplus_hash_dentry(const struct dentry *dentry, const struct inode *inode,
astr = str->name;
len = str->len;
while (len > 0) {
- int uninitialized_var(dsize);
+ int dsize = 0;
size = asc2unichar(sb, astr, len, &c);
astr += size;
len -= size;
diff --git a/fs/isofs/namei.c b/fs/isofs/namei.c
index c167028..e6e6e5f 100644
--- a/fs/isofs/namei.c
+++ b/fs/isofs/namei.c
@@ -166,8 +166,8 @@ isofs_find_entry(struct inode *dir, struct dentry *dentry,
struct dentry *isofs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
int found;
- unsigned long uninitialized_var(block);
- unsigned long uninitialized_var(offset);
+ unsigned long block = 0;
+ unsigned long offset = 0;
struct inode *inode;
struct page *page;

diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 4a6cf28..6992378 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -428,7 +428,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
{
size_t retlen;
int ret;
- uint32_t uninitialized_var(bad_offset);
+ uint32_t bad_offset = 0;

switch (jffs2_block_check_erase(c, jeb, &bad_offset)) {
case -EAGAIN: goto refile;
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index dab350d..7016005 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -315,7 +315,7 @@ static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
{
char *dname, *path;
- int uninitialized_var(maxsize);
+ int maxsize = 0;
char *mesg = buf;
int len;
struct auth_domain *dom;
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 31b9463..9c14a34 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -4671,7 +4671,7 @@ int ocfs2_insert_extent(handle_t *handle,
struct ocfs2_alloc_context *meta_ac)
{
int status;
- int uninitialized_var(free_records);
+ int free_records = 0;
struct buffer_head *last_eb_bh = NULL;
struct ocfs2_insert_type insert = {0, };
struct ocfs2_extent_rec rec;
@@ -6807,7 +6807,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
{
int ret, i, has_data, num_pages = 0;
handle_t *handle;
- u64 uninitialized_var(block);
+ u64 block = 0;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 8fe4e28..9ddca87 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -876,9 +876,9 @@ static int ocfs2_dx_dir_lookup(struct inode *inode,
u64 *ret_phys_blkno)
{
int ret = 0;
- unsigned int cend, uninitialized_var(clen);
- u32 uninitialized_var(cpos);
- u64 uninitialized_var(blkno);
+ unsigned int cend, clen = 0;
+ u32 cpos = 0;
+ u64 blkno = 0;
u32 name_hash = hinfo->major_hash;

ret = ocfs2_dx_dir_lookup_rec(inode, el, name_hash, &cpos, &blkno,
@@ -922,7 +922,7 @@ static int ocfs2_dx_dir_search(const char *name, int namelen,
struct ocfs2_dir_lookup_result *res)
{
int ret, i, found;
- u64 uninitialized_var(phys);
+ u64 phys = 0;
struct buffer_head *dx_leaf_bh = NULL;
struct ocfs2_dx_leaf *dx_leaf;
struct ocfs2_dx_entry *dx_entry = NULL;
@@ -4486,9 +4486,9 @@ out:
int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh)
{
int ret;
- unsigned int uninitialized_var(clen);
- u32 major_hash = UINT_MAX, p_cpos, uninitialized_var(cpos);
- u64 uninitialized_var(blkno);
+ unsigned int clen = 0;
+ u32 major_hash = UINT_MAX, p_cpos, cpos = 0;
+ u64 blkno = 0;
struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
struct buffer_head *dx_root_bh = NULL;
struct ocfs2_dx_root_block *dx_root;
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 70b5863..7b4481a 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -416,7 +416,7 @@ static int ocfs2_get_clusters_nocache(struct inode *inode,
{
int i, ret, tree_height, len;
struct ocfs2_dinode *di;
- struct ocfs2_extent_block *uninitialized_var(eb);
+ struct ocfs2_extent_block *eb = NULL;
struct ocfs2_extent_list *el;
struct ocfs2_extent_rec *rec;
struct buffer_head *eb_bh = NULL;
@@ -611,7 +611,7 @@ int ocfs2_get_clusters(struct inode *inode, u32 v_cluster,
unsigned int *extent_flags)
{
int ret;
- unsigned int uninitialized_var(hole_len), flags = 0;
+ unsigned int hole_len = 0, flags = 0;
struct buffer_head *di_bh = NULL;
struct ocfs2_extent_rec rec;

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index f1fd074..7249791 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2234,7 +2234,7 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
struct buffer_head *new_di_bh = NULL;
struct ocfs2_alloc_context *inode_ac = NULL;
struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
- u64 uninitialized_var(di_blkno), suballoc_loc;
+ u64 di_blkno = 0, suballoc_loc;
u16 suballoc_bit;

status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 30a0550..5d46ed0 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -1066,7 +1066,7 @@ static int ocfs2_get_refcount_rec(struct ocfs2_caching_info *ci,
struct buffer_head **ret_bh)
{
int ret = 0, i, found;
- u32 low_cpos, uninitialized_var(cpos_end);
+ u32 low_cpos, cpos_end = 0;
struct ocfs2_extent_list *el;
struct ocfs2_extent_rec *rec = NULL;
struct ocfs2_extent_block *eb = NULL;
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 286edf1..4de2955 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -802,7 +802,7 @@ static int fs_protocol_compare(struct ocfs2_protocol_version *existing,
static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
{
dlm_lockspace_t *fsdlm;
- struct ocfs2_live_connection *uninitialized_var(control);
+ struct ocfs2_live_connection *control = NULL;
int rc = 0;

BUG_ON(conn == NULL);
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 0ba9ea1..0492fa3 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -1195,7 +1195,7 @@ static int ocfs2_xattr_block_get(struct inode *inode,
struct ocfs2_xattr_value_root *xv;
size_t size;
int ret = -ENODATA, name_offset, name_len, i;
- int uninitialized_var(block_off);
+ int block_off = 0;

xs->bucket = ocfs2_xattr_bucket_new(inode);
if (!xs->bucket) {
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
index 77e3cb2..59f7ddb 100644
--- a/fs/omfs/file.c
+++ b/fs/omfs/file.c
@@ -220,7 +220,7 @@ static int omfs_get_block(struct inode *inode, sector_t block,
struct buffer_head *bh;
sector_t next, offset;
int ret;
- u64 uninitialized_var(new_block);
+ u64 new_block = 0;
u32 max_extents;
int extent_count;
struct omfs_extent *oe;
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index e8e01d7..fad341c 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -437,7 +437,7 @@ static int calc_dd_growth(const struct ubifs_info *c,
*/
int ubifs_budget_space(struct ubifs_info *c, struct ubifs_budget_req *req)
{
- int uninitialized_var(cmt_retries), uninitialized_var(wb_retries);
+ int cmt_retries = 0, wb_retries = 0;
int err, idx_growth, data_growth, dd_growth, retried = 0;

ubifs_assert(req->new_page <= 1);
diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c
index ff82293..ef1b10f 100644
--- a/fs/ubifs/commit.c
+++ b/fs/ubifs/commit.c
@@ -568,11 +568,11 @@ out:
*/
int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot)
{
- int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt;
+ int lnum, offs, len, err = 0, last_level = 0, child_cnt;
int first = 1, iip;
struct ubifs_debug_info *d = c->dbg;
- union ubifs_key uninitialized_var(lower_key), upper_key, l_key, u_key;
- unsigned long long uninitialized_var(last_sqnum);
+ union ubifs_key lower_key = { }, upper_key, l_key, u_key;
+ unsigned long long last_sqnum = 0;
struct ubifs_idx_node *idx;
struct list_head list;
struct idx_node *i;
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index e271fba..20d42ad 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -969,7 +969,7 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct ubifs_budget_req ino_req = { .dirtied_ino = 1,
.dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) };
struct timespec time;
- unsigned int uninitialized_var(saved_nlink);
+ unsigned int saved_nlink = 0;

/*
* Budget request settings: deletion direntry, new direntry, removing
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 5bc7781..68bbd9d 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -225,7 +225,7 @@ static int write_begin_slow(struct address_space *mapping,
struct ubifs_info *c = inode->i_sb->s_fs_info;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
struct ubifs_budget_req req = { .new_page = 1 };
- int uninitialized_var(err), appending = !!(pos + len > inode->i_size);
+ int err = 0, appending = !!(pos + len > inode->i_size);
struct page *page;

dbg_gen("ino %lu, pos %llu, len %u, i_size %lld",
@@ -428,7 +428,7 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
struct ubifs_info *c = inode->i_sb->s_fs_info;
struct ubifs_inode *ui = ubifs_inode(inode);
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
- int uninitialized_var(err), appending = !!(pos + len > inode->i_size);
+ int err = 0, appending = !!(pos + len > inode->i_size);
int skipped_read = 0;
struct page *page;

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index afaad07..e7f7bd1 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -931,7 +931,7 @@ int ubifs_jnl_rename(struct ubifs_info *c, const struct inode *old_dir,
int aligned_dlen1, aligned_dlen2, plen = UBIFS_INO_NODE_SZ;
int last_reference = !!(new_inode && new_inode->i_nlink == 0);
int move = (old_dir != new_dir);
- struct ubifs_inode *uninitialized_var(new_ui);
+ struct ubifs_inode *new_ui = NULL;

dbg_jnl("dent '%.*s' in dir ino %lu to dent '%.*s' in dir ino %lu",
old_dentry->d_name.len, old_dentry->d_name.name,
@@ -1145,7 +1145,7 @@ int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
union ubifs_key key, to_key;
struct ubifs_ino_node *ino;
struct ubifs_trun_node *trun;
- struct ubifs_data_node *uninitialized_var(dn);
+ struct ubifs_data_node *dn = NULL;
int err, dlen, len, lnum, offs, bit, sz, sync = IS_SYNC(inode);
struct ubifs_inode *ui = ubifs_inode(inode);
ino_t inum = inode->i_ino;
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index d46b19e..4ec9d1b 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -285,7 +285,7 @@ uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits)
const int k = 32 - nrbits;
uint8_t *p = *addr;
int b = *pos;
- uint32_t uninitialized_var(val);
+ uint32_t val = 0;
const int bytes = (nrbits + b + 7) >> 3;

ubifs_assert(nrbits > 0);
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 349f31a..9deaaba 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -898,7 +898,7 @@ static int fallible_resolve_collision(struct ubifs_info *c,
const struct qstr *nm, int adding)
{
struct ubifs_znode *o_znode = NULL, *znode = *zn;
- int uninitialized_var(o_n), err, cmp, unsure = 0, nn = *n;
+ int o_n = 0, err, cmp, unsure = 0, nn = *n;

cmp = fallible_matches_name(c, &znode->zbranch[nn], nm);
if (unlikely(cmp < 0))
@@ -1519,8 +1519,8 @@ out:
*/
int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu)
{
- int n, err = 0, lnum = -1, uninitialized_var(offs);
- int uninitialized_var(len);
+ int n, err = 0, lnum = -1, offs = 0;
+ int len = 0;
unsigned int block = key_block(c, &bu->key);
struct ubifs_znode *znode;

diff --git a/fs/ubifs/tnc_misc.c b/fs/ubifs/tnc_misc.c
index f6bf899..ad27fe3 100644
--- a/fs/ubifs/tnc_misc.c
+++ b/fs/ubifs/tnc_misc.c
@@ -136,8 +136,8 @@ int ubifs_search_zbranch(const struct ubifs_info *c,
const struct ubifs_znode *znode,
const union ubifs_key *key, int *n)
{
- int beg = 0, end = znode->child_cnt, uninitialized_var(mid);
- int uninitialized_var(cmp);
+ int beg = 0, end = znode->child_cnt, mid = 0;
+ int cmp = 0;
const struct ubifs_zbranch *zbr = &znode->zbranch[0];

ubifs_assert(end > beg);
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 1ba2baa..ff08108 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -645,7 +645,7 @@ static int udf_table_new_block(struct super_block *sb,
uint32_t spread = 0xFFFFFFFF, nspread = 0xFFFFFFFF;
uint32_t newblock = 0, adsize;
uint32_t elen, goal_elen = 0;
- struct kernel_lb_addr eloc, uninitialized_var(goal_eloc);
+ struct kernel_lb_addr eloc, goal_eloc = { };
struct extent_position epos, goal_epos;
int8_t etype;
struct udf_inode_info *iinfo = UDF_I(table);
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 848ffa7..cf85704 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2218,7 +2218,7 @@ xfs_bmap_rtalloc(
* pick an extent that will space things out in the rt area.
*/
if (ap->eof && ap->offset == 0) {
- xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */
+ xfs_rtblock_t rtx = 0; /* realtime extent no */

error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
if (error)
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index aa473fa..e44c69d 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1185,7 +1185,7 @@ xfs_seek_data(
struct inode *inode = file->f_mapping->host;
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
- loff_t uninitialized_var(offset);
+ loff_t offset = 0;
xfs_fsize_t isize;
xfs_fileoff_t fsbno;
xfs_filblks_t end;
@@ -1287,7 +1287,7 @@ xfs_seek_hole(
struct inode *inode = file->f_mapping->host;
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
- loff_t uninitialized_var(offset);
+ loff_t offset = 0;
xfs_fsize_t isize;
xfs_fileoff_t fsbno;
xfs_filblks_t end;
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 6a6d7ae..0342b94 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -103,10 +103,4 @@
#define __noclone /* not needed */
#endif

-/*
- * A trick to suppress uninitialized variable warning without generating any
- * code
- */
-#define uninitialized_var(x) x = x
-
#define __always_inline inline __attribute__((always_inline))
diff --git a/include/linux/compiler-intel.h b/include/linux/compiler-intel.h
index d8e636e..cba9593 100644
--- a/include/linux/compiler-intel.h
+++ b/include/linux/compiler-intel.h
@@ -27,5 +27,3 @@
#define __must_be_array(a) 0

#endif
-
-#define uninitialized_var(x) x
diff --git a/include/linux/mm.h b/include/linux/mm.h
index fa06804..2ad61c1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -337,7 +337,7 @@ static inline void compound_unlock(struct page *page)

static inline unsigned long compound_lock_irqsave(struct page *page)
{
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
local_irq_save(flags);
compound_lock(page);
diff --git a/ipc/msg.c b/ipc/msg.c
index a71af5a..30448fc 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -412,7 +412,7 @@ static int msgctl_down(struct ipc_namespace *ns, int msqid, int cmd,
struct msqid_ds __user *buf, int version)
{
struct kern_ipc_perm *ipcp;
- struct msqid64_ds uninitialized_var(msqid64);
+ struct msqid64_ds msqid64 = { };
struct msg_queue *msq;
int err;

diff --git a/kernel/async.c b/kernel/async.c
index 9d31183..caa13a7 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -119,7 +119,7 @@ static void async_run_entry_fn(struct work_struct *work)
struct async_entry *entry =
container_of(work, struct async_entry, work);
unsigned long flags;
- ktime_t uninitialized_var(calltime), delta, rettime;
+ ktime_t calltime = { }, delta, rettime;
struct async_domain *running = entry->running;

/* 1) move self to the running queue */
@@ -302,7 +302,7 @@ EXPORT_SYMBOL_GPL(async_synchronize_full_domain);
*/
void async_synchronize_cookie_domain(async_cookie_t cookie, struct async_domain *running)
{
- ktime_t uninitialized_var(starttime), delta, endtime;
+ ktime_t starttime = { }, delta, endtime;

if (!running)
return;
diff --git a/kernel/audit.c b/kernel/audit.c
index 40414e9..031f716 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1124,7 +1124,7 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
{
struct audit_buffer *ab = NULL;
struct timespec t;
- unsigned int uninitialized_var(serial);
+ unsigned int serial = 0;
int reserve;
unsigned long timeout_start = jiffies;

diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 14ff484..edba243 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -562,7 +562,7 @@ int vkdb_printf(const char *fmt, va_list ap)
char *moreprompt = "more> ";
struct console *c = console_drivers;
static DEFINE_SPINLOCK(kdb_printf_lock);
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

preempt_disable();
saved_trap_printk = kdb_trap_printk;
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 5cc4e7e..84421b6 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1449,7 +1449,7 @@ static void handle_swbp(struct pt_regs *regs)
struct uprobe_task *utask;
struct uprobe *uprobe;
unsigned long bp_vaddr;
- int uninitialized_var(is_swbp);
+ int is_swbp = 0;

bp_vaddr = uprobe_get_swbp_addr(regs);
uprobe = find_active_uprobe(bp_vaddr, &is_swbp);
diff --git a/kernel/exit.c b/kernel/exit.c
index 346616c..dc5c50d 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -96,7 +96,7 @@ static void __exit_signal(struct task_struct *tsk)
struct signal_struct *sig = tsk->signal;
bool group_dead = thread_group_leader(tsk);
struct sighand_struct *sighand;
- struct tty_struct *uninitialized_var(tty);
+ struct tty_struct *tty = NULL;

sighand = rcu_dereference_check(tsk->sighand,
lockdep_tasklist_lock_is_held());
diff --git a/kernel/futex.c b/kernel/futex.c
index 3717e7b..686a9fa 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -867,7 +867,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
{
struct task_struct *new_owner;
struct futex_pi_state *pi_state = this->pi_state;
- u32 uninitialized_var(curval), newval;
+ u32 curval = 0, newval;

if (!pi_state)
return -EINVAL;
@@ -929,7 +929,7 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)

static int unlock_futex_pi(u32 __user *uaddr, u32 uval)
{
- u32 uninitialized_var(oldval);
+ u32 oldval = 0;

/*
* There is no waiter, so we unlock the futex. The owner died
@@ -1589,7 +1589,7 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
u32 newtid = task_pid_vnr(newowner) | FUTEX_WAITERS;
struct futex_pi_state *pi_state = q->pi_state;
struct task_struct *oldowner = pi_state->owner;
- u32 uval, uninitialized_var(curval), newval;
+ u32 uval, curval = 0, newval;
int ret;

/* Owner died? */
@@ -2488,7 +2488,7 @@ err_unlock:
*/
int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
{
- u32 uval, uninitialized_var(nval), mval;
+ u32 uval, nval = 0, mval;

retry:
if (get_user(uval, uaddr))
@@ -2562,7 +2562,7 @@ void exit_robust_list(struct task_struct *curr)
struct robust_list_head __user *head = curr->robust_list;
struct robust_list __user *entry, *next_entry, *pending;
unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
- unsigned int uninitialized_var(next_pi);
+ unsigned int next_pi = 0;
unsigned long futex_offset;
int rc;

diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 83e368b..7a1603e 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -51,7 +51,7 @@ void compat_exit_robust_list(struct task_struct *curr)
struct compat_robust_list_head __user *head = curr->compat_robust_list;
struct robust_list __user *entry, *next_entry, *pending;
unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
- unsigned int uninitialized_var(next_pi);
+ unsigned int next_pi = 0;
compat_uptr_t uentry, next_uentry, upending;
compat_long_t futex_offset;
int rc;
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 7981e5b..8c1cee7 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -1231,7 +1231,7 @@ static int noop_count(struct lock_list *entry, void *data)
unsigned long __lockdep_count_forward_deps(struct lock_list *this)
{
unsigned long count = 0;
- struct lock_list *uninitialized_var(target_entry);
+ struct lock_list *target_entry = NULL;

__bfs_forwards(this, (void *)&count, noop_count, &target_entry);

@@ -1257,7 +1257,7 @@ unsigned long lockdep_count_forward_deps(struct lock_class *class)
unsigned long __lockdep_count_backward_deps(struct lock_list *this)
{
unsigned long count = 0;
- struct lock_list *uninitialized_var(target_entry);
+ struct lock_list *target_entry = NULL;

__bfs_backwards(this, (void *)&count, noop_count, &target_entry);

@@ -1551,8 +1551,8 @@ check_usage(struct task_struct *curr, struct held_lock *prev,
{
int ret;
struct lock_list this, that;
- struct lock_list *uninitialized_var(target_entry);
- struct lock_list *uninitialized_var(target_entry1);
+ struct lock_list *target_entry = NULL;
+ struct lock_list *target_entry1 = NULL;

this.parent = NULL;

@@ -1808,7 +1808,7 @@ check_prev_add(struct task_struct *curr, struct held_lock *prev,
struct lock_list *entry;
int ret;
struct lock_list this;
- struct lock_list *uninitialized_var(target_entry);
+ struct lock_list *target_entry = NULL;
/*
* Static variable, serialized by the graph_lock().
*
@@ -2344,7 +2344,7 @@ check_usage_forwards(struct task_struct *curr, struct held_lock *this,
{
int ret;
struct lock_list root;
- struct lock_list *uninitialized_var(target_entry);
+ struct lock_list *target_entry = NULL;

root.parent = NULL;
root.class = hlock_class(this);
@@ -2368,7 +2368,7 @@ check_usage_backwards(struct task_struct *curr, struct held_lock *this,
{
int ret;
struct lock_list root;
- struct lock_list *uninitialized_var(target_entry);
+ struct lock_list *target_entry = NULL;

root.parent = NULL;
root.class = hlock_class(this);
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index d84beb9..4751dc4 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -725,7 +725,7 @@ static int device_dma_allocations(struct device *dev, struct dma_debug_entry **o
static int dma_debug_device_change(struct notifier_block *nb, unsigned long action, void *data)
{
struct device *dev = data;
- struct dma_debug_entry *uninitialized_var(entry);
+ struct dma_debug_entry *entry = NULL;
int count;

if (global_disable)
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index e796429..15b3cc4 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -563,7 +563,7 @@ void *radix_tree_tag_clear(struct radix_tree_root *root,
struct radix_tree_node *node = NULL;
struct radix_tree_node *slot = NULL;
unsigned int height, shift;
- int uninitialized_var(offset);
+ int offset = 0;

height = root->height;
if (index > radix_tree_maxindex(height))
@@ -1313,7 +1313,7 @@ void *radix_tree_delete(struct radix_tree_root *root, unsigned long index)
struct radix_tree_node *to_free;
unsigned int height, shift;
int tag;
- int uninitialized_var(offset);
+ int offset = 0;

height = root->height;
if (index > radix_tree_maxindex(height))
diff --git a/mm/frontswap.c b/mm/frontswap.c
index 2890e67..8541ca1 100644
--- a/mm/frontswap.c
+++ b/mm/frontswap.c
@@ -318,7 +318,7 @@ static int __frontswap_shrink(unsigned long target_pages,
void frontswap_shrink(unsigned long target_pages)
{
unsigned long pages_to_unuse = 0;
- int uninitialized_var(type), ret;
+ int type = 0, ret;

/*
* we don't want to hold swap_lock while doing a very
diff --git a/mm/ksm.c b/mm/ksm.c
index ae539f0..9810120 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1431,7 +1431,7 @@ next_mm:
static void ksm_do_scan(unsigned int scan_npages)
{
struct rmap_item *rmap_item;
- struct page *uninitialized_var(page);
+ struct page *page = NULL;

while (scan_npages-- && likely(!freezing(current))) {
cond_resched();
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 7acf43b..ffe88ac 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -948,7 +948,7 @@ struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root,
}

while (!memcg) {
- struct mem_cgroup_reclaim_iter *uninitialized_var(iter);
+ struct mem_cgroup_reclaim_iter *iter = NULL;
struct cgroup_subsys_state *css;

if (reclaim) {
@@ -1993,7 +1993,7 @@ void mem_cgroup_update_page_stat(struct page *page,
{
struct mem_cgroup *memcg;
struct page_cgroup *pc = lookup_page_cgroup(page);
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

if (mem_cgroup_disabled())
return;
@@ -2529,7 +2529,7 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg,
bool lrucare)
{
struct page_cgroup *pc = lookup_page_cgroup(page);
- struct zone *uninitialized_var(zone);
+ struct zone *zone = NULL;
struct lruvec *lruvec;
bool was_on_lru = false;
bool anon;
@@ -2706,7 +2706,7 @@ static int mem_cgroup_move_parent(struct page *page,
{
struct mem_cgroup *parent;
unsigned int nr_pages;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;
int ret;

/* Is ROOT ? */
diff --git a/mm/memory.c b/mm/memory.c
index fb135ba..bfd0932 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2354,7 +2354,7 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
pte_t *pte;
int err;
pgtable_t token;
- spinlock_t *uninitialized_var(ptl);
+ spinlock_t *ptl = NULL;

pte = (mm == &init_mm) ?
pte_alloc_kernel(pmd, addr) :
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d04a8a5..8a58e95 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1089,7 +1089,7 @@ out:
static struct page *new_vma_page(struct page *page, unsigned long private, int **x)
{
struct vm_area_struct *vma = (struct vm_area_struct *)private;
- unsigned long uninitialized_var(address);
+ unsigned long address = 0;

while (vma) {
address = page_address_in_vma(page, vma);
@@ -1427,7 +1427,7 @@ SYSCALL_DEFINE5(get_mempolicy, int __user *, policy,
unsigned long, addr, unsigned long, flags)
{
int err;
- int uninitialized_var(pval);
+ int pval = 0;
nodemask_t nodes;

if (nmask != NULL && maxnode < MAX_NUMNODES)
@@ -2431,7 +2431,7 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
{
struct mempolicy *new = NULL;
unsigned short mode;
- unsigned short uninitialized_var(mode_flags);
+ unsigned short mode_flags = 0;
nodemask_t nodes;
char *nodelist = strchr(str, ':');
char *flags = strchr(str, '=');
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 79e0f3e..7ca35c1 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -696,7 +696,7 @@ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask,
struct task_struct *p;
unsigned long totalpages;
unsigned long freed = 0;
- unsigned int uninitialized_var(points);
+ unsigned int points = 0;
enum oom_constraint constraint = CONSTRAINT_NONE;
int killed = 0;

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 830893b..7734244 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -244,7 +244,7 @@ void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty)
{
unsigned long background;
unsigned long dirty;
- unsigned long uninitialized_var(available_memory);
+ unsigned long available_memory = 0;
struct task_struct *tsk;

if (!vm_dirty_bytes || !dirty_background_bytes)
@@ -1713,7 +1713,7 @@ int write_cache_pages(struct address_space *mapping,
int done = 0;
struct pagevec pvec;
int nr_pages;
- pgoff_t uninitialized_var(writeback_index);
+ pgoff_t writeback_index = 0;
pgoff_t index;
pgoff_t end; /* Inclusive */
pgoff_t done_index;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5b74de6..1708b7c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -532,7 +532,7 @@ static inline void __free_one_page(struct page *page,
{
unsigned long page_idx;
unsigned long combined_idx;
- unsigned long uninitialized_var(buddy_idx);
+ unsigned long buddy_idx = 0;
struct page *buddy;

if (unlikely(PageCompound(page)))
diff --git a/mm/percpu.c b/mm/percpu.c
index ddc5efb..9eccd97 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1445,7 +1445,7 @@ static struct pcpu_alloc_info * __init pcpu_build_alloc_info(
const size_t static_size = __per_cpu_end - __per_cpu_start;
int nr_groups = 1, nr_units = 0;
size_t size_sum, min_unit_size, alloc_size;
- int upa, max_upa, uninitialized_var(best_upa); /* units_per_alloc */
+ int upa, max_upa, best_upa = 0; /* units_per_alloc */
int last_allocs, group, unit;
unsigned int cpu, tcpu;
struct pcpu_alloc_info *ai;
diff --git a/mm/slub.c b/mm/slub.c
index a0d6984..f616f3b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2463,7 +2463,7 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
struct page new;
unsigned long counters;
struct kmem_cache_node *n = NULL;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

stat(s, FREE_SLOWPATH);

diff --git a/mm/swap.c b/mm/swap.c
index 6310dc2..6673dd1 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -673,7 +673,7 @@ void release_pages(struct page **pages, int nr, int cold)
LIST_HEAD(pages_to_free);
struct zone *zone = NULL;
struct lruvec *lruvec;
- unsigned long uninitialized_var(flags);
+ unsigned long flags = 0;

for (i = 0; i < nr; i++) {
struct page *page = pages[i];
@@ -739,7 +739,7 @@ EXPORT_SYMBOL(__pagevec_release);
void lru_add_page_tail(struct page *page, struct page *page_tail,
struct lruvec *lruvec)
{
- int uninitialized_var(active);
+ int active = 0;
enum lru_list lru;
const int file = 0;

diff --git a/net/dccp/options.c b/net/dccp/options.c
index a58e0b6..6e0a61e 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -60,7 +60,7 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
(dh->dccph_doff * 4);
struct dccp_options_received *opt_recv = &dp->dccps_options_received;
unsigned char opt, len;
- unsigned char *uninitialized_var(value);
+ unsigned char *value = NULL;
u32 elapsed_time;
__be32 opt_val;
int rc;
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 90bbefb..8e9ec5b 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -476,7 +476,7 @@ static inline void fl_link(struct ipv6_pinfo *np, struct ipv6_fl_socklist *sfl,

int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen)
{
- int uninitialized_var(err);
+ int err = 0;
struct net *net = sock_net(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct in6_flowlabel_req freq;
diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c
index 1ce3bef..ac186ed 100644
--- a/net/netfilter/nf_conntrack_ftp.c
+++ b/net/netfilter/nf_conntrack_ftp.c
@@ -358,7 +358,7 @@ static int help(struct sk_buff *skb,
int ret;
u32 seq;
int dir = CTINFO2DIR(ctinfo);
- unsigned int uninitialized_var(matchlen), uninitialized_var(matchoff);
+ unsigned int matchlen = 0, matchoff = 0;
struct nf_ct_ftp_master *ct_ftp_info = nfct_help_data(ct);
struct nf_conntrack_expect *exp;
union nf_inet_addr *daddr;
diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index e12d44e..e2348a7 100644
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -235,7 +235,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
struct net_device *indev;
struct net_device *outdev;
struct nf_conn *ct = NULL;
- enum ip_conntrack_info uninitialized_var(ctinfo);
+ enum ip_conntrack_info ctinfo = 0;

size = NLMSG_SPACE(sizeof(struct nfgenmsg))
+ nla_total_size(sizeof(struct nfqnl_msg_packet_hdr))
@@ -751,7 +751,7 @@ nfqnl_recv_verdict(struct sock *ctnl, struct sk_buff *skb,
struct nfqnl_instance *queue;
unsigned int verdict;
struct nf_queue_entry *entry;
- enum ip_conntrack_info uninitialized_var(ctinfo);
+ enum ip_conntrack_info ctinfo = 0;
struct nf_conn *ct = NULL;

queue = instance_lookup(queue_num);
diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c
index 63b2bdb..f71d223 100644
--- a/net/netfilter/xt_socket.c
+++ b/net/netfilter/xt_socket.c
@@ -108,9 +108,9 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
const struct iphdr *iph = ip_hdr(skb);
struct udphdr _hdr, *hp = NULL;
struct sock *sk;
- __be32 uninitialized_var(daddr), uninitialized_var(saddr);
- __be16 uninitialized_var(dport), uninitialized_var(sport);
- u8 uninitialized_var(protocol);
+ __be32 daddr = 0, saddr = 0;
+ __be16 dport = 0, sport = 0;
+ u8 protocol = 0;
#ifdef XT_SOCKET_HAVE_CONNTRACK
struct nf_conn const *ct;
enum ip_conntrack_info ctinfo;
@@ -262,8 +262,8 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
struct udphdr _hdr, *hp = NULL;
struct sock *sk;
struct in6_addr *daddr = NULL, *saddr = NULL;
- __be16 uninitialized_var(dport), uninitialized_var(sport);
- int thoff = 0, uninitialized_var(tproto);
+ __be16 dport = 0, sport = 0;
+ int thoff = 0, tproto = 0;
const struct xt_socket_mtinfo1 *info = (struct xt_socket_mtinfo1 *) par->matchinfo;

tproto = ipv6_find_hdr(skb, &thoff, -1, NULL, NULL);
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index ce82d0c..384f4a9 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -211,7 +211,7 @@ static u32 flow_get_skgid(const struct sk_buff *skb)

static u32 flow_get_vlan_tag(const struct sk_buff *skb)
{
- u16 uninitialized_var(tag);
+ u16 tag = 0;

if (vlan_get_tag(skb, &tag) < 0)
return 0;
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 564b9fc..380578c 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -373,7 +373,7 @@ static int
cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct cbq_sched_data *q = qdisc_priv(sch);
- int uninitialized_var(ret);
+ int ret = 0;
struct cbq_class *cl = cbq_classify(skb, sch, &ret);

#ifdef CONFIG_NET_CLS_ACT
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 4e606fc..bb6b445 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -172,7 +172,7 @@ static int fq_codel_enqueue(struct sk_buff *skb, struct Qdisc *sch)
struct fq_codel_sched_data *q = qdisc_priv(sch);
unsigned int idx;
struct fq_codel_flow *flow;
- int uninitialized_var(ret);
+ int ret = 0;

idx = fq_codel_classify(skb, sch, &ret);
if (idx == 0) {
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 6c2ec45..4291054 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1587,7 +1587,7 @@ static int
hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct hfsc_class *cl;
- int uninitialized_var(err);
+ int err = 0;

cl = hfsc_classify(skb, sch, &err);
if (cl == NULL) {
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 9d75b77..b8786d3 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -548,7 +548,7 @@ static inline void htb_deactivate(struct htb_sched *q, struct htb_class *cl)

static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
- int uninitialized_var(ret);
+ int ret = 0;
struct htb_sched *q = qdisc_priv(sch);
struct htb_class *cl = htb_classify(skb, sch, &ret);

diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index d3a1bc2..0b5b784 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -373,7 +373,7 @@ sfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
unsigned int hash;
sfq_index x, qlen;
struct sfq_slot *slot;
- int uninitialized_var(ret);
+ int ret = 0;
struct sk_buff *head;
int delta;

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 62e4f9b..1c90a82 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -831,7 +831,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
struct rdma_conn_param conn_param;
struct ib_qp_init_attr qp_attr;
struct ib_device_attr devattr;
- int uninitialized_var(dma_mr_acc);
+ int dma_mr_acc = 0;
int need_dma_mr;
int ret;
int i;
diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
index 2bb95a7..acb7751 100644
--- a/sound/core/control_compat.c
+++ b/sound/core/control_compat.c
@@ -223,7 +223,7 @@ static int copy_ctl_value_from_user(struct snd_card *card,
int *typep, int *countp)
{
int i, type, size;
- int uninitialized_var(count);
+ int count = 0;
unsigned int indirect;

if (copy_from_user(&data->id, &data32->id, sizeof(data->id)))
diff --git a/sound/isa/sb/sb16_csp.c b/sound/isa/sb/sb16_csp.c
index c1aa21e..4b8835f 100644
--- a/sound/isa/sb/sb16_csp.c
+++ b/sound/isa/sb/sb16_csp.c
@@ -116,7 +116,7 @@ static void info_read(struct snd_info_entry *entry, struct snd_info_buffer *buff
int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep)
{
struct snd_sb_csp *p;
- int uninitialized_var(version);
+ int version = 0;
int err;
struct snd_hwdep *hw;

diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 7f78c6d..fa51882 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -300,7 +300,7 @@ static void queue_pending_output_urbs(struct snd_usb_endpoint *ep)
while (test_bit(EP_FLAG_RUNNING, &ep->flags)) {

unsigned long flags;
- struct snd_usb_packet_info *uninitialized_var(packet);
+ struct snd_usb_packet_info *packet = NULL;
struct snd_urb_ctx *ctx = NULL;
struct urb *urb;
int err, i;
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index 81847dd..2b2e271 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -105,8 +105,6 @@ static inline void kfree(void *p)
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})

-#define uninitialized_var(x) x = x
-
# ifndef likely
# define likely(x) (__builtin_expect(!!(x), 1))
# endif
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