[PATCH v11 58/60] PCI: Introduce resource_disabled()

From: Yinghai Lu
Date: Thu Apr 07 2016 - 20:23:16 EST

Current is using !flags, and we are going to use
IORESOURCE_DISABLED instead of clearing resource flags.

Let's convert all !flags to helper function resource_disabled().
resource_disabled will check !flags and IORESOURCE_DISABLED both.

Cc: linux-alpha@xxxxxxxxxxxxxxx
Cc: linux-ia64@xxxxxxxxxxxxxxx
Cc: linux-am33-list@xxxxxxxxxx
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-s390@xxxxxxxxxxxxxxx
Cc: sparclinux@xxxxxxxxxxxxxxx
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: linux-xtensa@xxxxxxxxxxxxxxxx
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-sh@xxxxxxxxxxxxxxx
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
---
arch/alpha/kernel/pci.c | 2 +-
arch/ia64/pci/pci.c | 4 ++--
arch/microblaze/pci/pci-common.c | 15 ++++++++-------
arch/mn10300/unit-asb2305/pci-asb2305.c | 4 ++--
arch/mn10300/unit-asb2305/pci.c | 4 ++--
arch/powerpc/kernel/pci-common.c | 16 +++++++++-------
arch/powerpc/platforms/powernv/pci-ioda.c | 12 ++++++------
arch/s390/pci/pci.c | 2 +-
arch/sparc/kernel/pci.c | 2 +-
arch/x86/pci/i386.c | 4 ++--
arch/xtensa/kernel/pci.c | 4 ++--
drivers/iommu/intel-iommu.c | 3 ++-
drivers/pci/host/pcie-rcar.c | 2 +-
drivers/pci/iov.c | 2 +-
drivers/pci/probe.c | 2 +-
drivers/pci/quirks.c | 4 ++--
drivers/pci/rom.c | 2 +-
drivers/pci/setup-bus.c | 8 ++++----
drivers/pci/setup-res.c | 2 +-
include/linux/ioport.h | 4 ++++
20 files changed, 53 insertions(+), 45 deletions(-)

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 5f387ee..c89c8ef 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -282,7 +282,7 @@ pcibios_claim_one_bus(struct pci_bus *b)
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];

- if (r->parent || !r->start || !r->flags)
+ if (r->parent || !r->start || resource_disabled(r))
continue;
if (pci_has_flag(PCI_PROBE_ONLY) ||
(r->flags & IORESOURCE_PCI_FIXED)) {
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 8f6ac2f..f00373f 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -333,7 +333,7 @@ void pcibios_fixup_device_resources(struct pci_dev *dev)
for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) {
struct resource *r = &dev->resource[idx];

- if (!r->flags || r->parent || !r->start)
+ if (resource_disabled(r) || r->parent || !r->start)
continue;

pci_claim_resource(dev, idx);
@@ -351,7 +351,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev)
for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
struct resource *r = &dev->resource[idx];

- if (!r->flags || r->parent || !r->start)
+ if (resource_disabled(r) || r->parent || !r->start)
continue;

pci_claim_bridge_resource(dev, idx);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 35654be..4cc5ed0 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -694,7 +694,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev)
}
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
struct resource *res = dev->resource + i;
- if (!res->flags)
+ if (resource_disabled(res))
continue;
if (res->start == 0) {
pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]",
@@ -795,7 +795,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus)
pci_bus_for_each_resource(bus, res, i) {
if (!res)
continue;
- if (!res->flags)
+ if (resource_disabled(res))
continue;
if (i >= 3 && bus->self->transparent)
continue;
@@ -964,7 +964,7 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus)
pci_domain_nr(bus), bus->number);

pci_bus_for_each_resource(bus, res, i) {
- if (!res || !res->flags
+ if (!res || resource_disabled(res)
|| res->start > res->end || res->parent)
continue;
if (bus->parent == NULL)
@@ -1066,7 +1066,8 @@ static void __init pcibios_allocate_resources(int pass)
r = &dev->resource[idx];
if (r->parent) /* Already allocated */
continue;
- if (!r->flags || (r->flags & IORESOURCE_UNSET))
+ if (resource_disabled(r) ||
+ (r->flags & IORESOURCE_UNSET))
continue; /* Not assigned at all */
/* We only allocate ROMs on pass 1 just in case they
* have been screwed up by firmware
@@ -1197,7 +1198,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus)
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];

- if (r->parent || !r->start || !r->flags)
+ if (r->parent || !r->start || resource_disabled(r))
continue;

pr_debug("PCI: Claiming %s: ", pci_name(dev));
@@ -1257,7 +1258,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose,
res->start = (res->start + io_offset) & 0xffffffffu;
res->end = (res->end + io_offset) & 0xffffffffu;

- if (!res->flags) {
+ if (resource_disabled(res)) {
pr_warn("PCI: I/O resource not set for host ");
pr_cont("bridge %s (domain %d)\n",
hose->dn->full_name, hose->global_number);
@@ -1277,7 +1278,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose,
/* Hookup PHB Memory resources */
for (i = 0; i < 3; ++i) {
res = &hose->mem_resources[i];
- if (!res->flags) {
+ if (resource_disabled(res)) {
if (i > 0)
continue;
pr_err("PCI: Memory resource 0 not set for ");
diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.c b/arch/mn10300/unit-asb2305/pci-asb2305.c
index b7ab837..7e70e51 100644
--- a/arch/mn10300/unit-asb2305/pci-asb2305.c
+++ b/arch/mn10300/unit-asb2305/pci-asb2305.c
@@ -103,7 +103,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
idx < PCI_NUM_RESOURCES;
idx++) {
r = &dev->resource[idx];
- if (!r->flags)
+ if (resource_disabled(r))
continue;
if (!r->start ||
pci_claim_bridge_resource(dev, idx) < 0) {
@@ -188,7 +188,7 @@ static int __init pcibios_assign_resources(void)
addresses. */
for_each_pci_dev(dev) {
r = &dev->resource[PCI_ROM_RESOURCE];
- if (!r->flags || !r->start)
+ if (resource_disabled(r) || !r->start)
continue;
if (pci_claim_resource(dev, PCI_ROM_RESOURCE) < 0) {
r->end -= r->start;
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index 3dfe2d3..ad77b18 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -291,7 +291,7 @@ static void pcibios_fixup_device_resources(struct pci_dev *dev)
for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) {
struct resource *r = &dev->resource[idx];

- if (!r->flags || r->parent || !r->start)
+ if (resource_disabled(r) || r->parent || !r->start)
continue;

pci_claim_resource(dev, idx);
@@ -308,7 +308,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev)
for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
struct resource *r = &dev->resource[idx];

- if (!r->flags || r->parent || !r->start)
+ if (resource_disabled(r) || r->parent || !r->start)
continue;

pci_claim_bridge_resource(dev, idx);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 2a7f4fd..94d11f9 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -811,7 +811,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev)
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
struct resource *res = dev->resource + i;
struct pci_bus_region reg;
- if (!res->flags)
+ if (resource_disabled(res))
continue;

/* If we're going to re-assign everything, we mark all resources
@@ -920,7 +920,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus)
struct pci_dev *dev = bus->self;

pci_bus_for_each_resource(bus, res, i) {
- if (!res || !res->flags)
+ if (!res || resource_disabled(res))
continue;
if (i >= 3 && bus->self->transparent)
continue;
@@ -1161,7 +1161,8 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus)
pci_domain_nr(bus), bus->number);

pci_bus_for_each_resource(bus, res, i) {
- if (!res || !res->flags || res->start > res->end || res->parent)
+ if (!res || resource_disabled(res) ||
+ res->start > res->end || res->parent)
continue;

/* If the resource was left unset at this point, we clear it */
@@ -1256,7 +1257,8 @@ static void __init pcibios_allocate_resources(int pass)
r = &dev->resource[idx];
if (r->parent) /* Already allocated */
continue;
- if (!r->flags || (r->flags & IORESOURCE_UNSET))
+ if (resource_disabled(r) ||
+ (r->flags & IORESOURCE_UNSET))
continue; /* Not assigned at all */
/* We only allocate ROMs on pass 1 just in case they
* have been screwed up by firmware
@@ -1394,7 +1396,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus)
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];

- if (r->parent || !r->start || !r->flags)
+ if (r->parent || !r->start || resource_disabled(r))
continue;

pr_debug("PCI: Claiming %s: Resource %d: %pR\n",
@@ -1475,7 +1477,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose,
/* Hookup PHB IO resource */
res = &hose->io_resource;

- if (!res->flags) {
+ if (resource_disabled(res)) {
pr_info("PCI: I/O resource not set for host"
" bridge %s (domain %d)\n",
hose->dn->full_name, hose->global_number);
@@ -1490,7 +1492,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose,
/* Hookup PHB Memory resources */
for (i = 0; i < 3; ++i) {
res = &hose->mem_resources[i];
- if (!res->flags) {
+ if (resource_disabled(res)) {
if (i == 0)
printk(KERN_ERR "PCI: Memory resource 0 not set for "
"host bridge %s (domain %d)\n",
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index c5baaf3..e621a68 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -869,7 +869,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset)
num_vfs = pdn->num_vfs;
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &dev->resource[i + PCI_IOV_RESOURCES];
- if (!res->flags || !res->parent)
+ if (resource_disabled(res) || !res->parent)
continue;

/*
@@ -897,7 +897,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset)
*/
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &dev->resource[i + PCI_IOV_RESOURCES];
- if (!res->flags || !res->parent)
+ if (resource_disabled(res) || !res->parent)
continue;

size = pci_iov_resource_size(dev, i + PCI_IOV_RESOURCES);
@@ -1260,7 +1260,7 @@ static int pnv_pci_vf_assign_m64(struct pci_dev *pdev, u16 num_vfs)

for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &pdev->resource[i + PCI_IOV_RESOURCES];
- if (!res->flags || !res->parent)
+ if (resource_disabled(res) || !res->parent)
continue;

for (j = 0; j < m64_bars; j++) {
@@ -2863,7 +2863,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)

for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &pdev->resource[i + PCI_IOV_RESOURCES];
- if (!res->flags || res->parent)
+ if (resource_disabled(res) || res->parent)
continue;
if (!pnv_pci_is_mem_pref_64(res->flags)) {
dev_warn(&pdev->dev, "Don't support SR-IOV with"
@@ -2899,7 +2899,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev)

for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &pdev->resource[i + PCI_IOV_RESOURCES];
- if (!res->flags || res->parent)
+ if (resource_disabled(res) || res->parent)
continue;

size = pci_iov_resource_size(pdev, i + PCI_IOV_RESOURCES);
@@ -2951,7 +2951,7 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose,
BUG_ON(!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)));

pci_bus_for_each_resource(pe->pbus, res, i) {
- if (!res || !res->flags ||
+ if (!res || resource_disabled(res) ||
res->start > res->end)
continue;

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 871af75..79e89fb 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -646,7 +646,7 @@ int pcibios_add_device(struct pci_dev *pdev)

for (i = 0; i < PCI_BAR_COUNT; i++) {
res = &pdev->resource[i];
- if (res->parent || !res->flags)
+ if (res->parent || resource_disabled(res))
continue;
pci_claim_resource(pdev, i);
}
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index e46e739..fa82e8e8 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -631,7 +631,7 @@ static void pci_claim_bus_resources(struct pci_bus *bus)
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];

- if (r->parent || !r->start || !r->flags)
+ if (r->parent || !r->start || resource_disabled(r))
continue;

if (ofpci_verbose)
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 2df7723..dcd5beb 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -223,7 +223,7 @@ static void pcibios_allocate_bridge_resources(struct pci_dev *dev)

for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) {
r = &dev->resource[idx];
- if (!r->flags)
+ if (resource_disabled(r))
continue;
if (r->parent) /* Already allocated */
continue;
@@ -352,7 +352,7 @@ static void pcibios_allocate_dev_rom_resource(struct pci_dev *dev)
* addresses.
*/
r = &dev->resource[PCI_ROM_RESOURCE];
- if (!r->flags || !r->start)
+ if (resource_disabled(r) || !r->start)
return;
if (r->parent) /* Already allocated */
return;
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index b848cc3..f34d061 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -142,7 +142,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,

io_offset = (unsigned long)pci_ctrl->io_space.base;
res = &pci_ctrl->io_resource;
- if (!res->flags) {
+ if (resource_disabled(res)) {
if (io_offset)
printk (KERN_ERR "I/O resource not set for host"
" bridge %d\n", pci_ctrl->index);
@@ -156,7 +156,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,

for (i = 0; i < 3; i++) {
res = &pci_ctrl->mem_resources[i];
- if (!res->flags) {
+ if (resource_disabled(res)) {
if (i > 0)
continue;
printk(KERN_ERR "Memory resource not set for "
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a2e1b7f..1b8a7f6 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1825,7 +1825,8 @@ static int dmar_init_reserved_ranges(void)

for (i = 0; i < PCI_NUM_RESOURCES; i++) {
r = &pdev->resource[i];
- if (!r->flags || !(r->flags & IORESOURCE_MEM))
+ if (resource_disabled(r) ||
+ !(r->flags & IORESOURCE_MEM))
continue;
iova = reserve_iova(&reserved_iova_list,
IOVA_PFN(r->start),
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index 3509218..716efd5 100644
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -361,7 +361,7 @@ static int rcar_pcie_setup(struct list_head *resource, struct rcar_pcie *pci)
resource_list_for_each_entry(win, &pci->resources) {
struct resource *res = win->res;

- if (!res->flags)
+ if (resource_disabled(res))
continue;

switch (resource_type(res)) {
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index 2194b44..a275c98 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -434,7 +434,7 @@ found:
else
bar64 = __pci_read_base(dev, pci_bar_unknown, res,
pos + PCI_SRIOV_BAR + i * 4);
- if (!res->flags)
+ if (resource_disabled(res))
continue;
if (resource_size(res) & (PAGE_SIZE - 1)) {
rc = -EIO;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 6b079f4..52ddc45 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2308,7 +2308,7 @@ void pci_bus_release_busn_res(struct pci_bus *b)
struct resource *res = &b->busn_res;
int ret;

- if (!res->flags || !res->parent)
+ if (resource_disabled(res) || !res->parent)
return;

ret = release_resource(res);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index a7cd617..61f87d5 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -348,7 +348,7 @@ static void quirk_bar_fixed(struct pci_dev *dev)
for (i = 0; i < PCI_STD_RESOURCE_END; i++) {
struct resource *r = &dev->resource[i];

- if (!r->start || !r->flags)
+ if (!r->start || resource_disabled(r))
continue;
r->flags |= IORESOURCE_PCI_FIXED;
}
@@ -362,7 +362,7 @@ static void quirk_allocate_fixed(struct pci_dev *dev)
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];

- if (r->parent ||
+ if (r->parent || resource_disabled(r) ||
!(r->flags & IORESOURCE_PCI_FIXED) ||
!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
continue;
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 06663d3..cb40e8b 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -28,7 +28,7 @@ int pci_enable_rom(struct pci_dev *pdev)
struct pci_bus_region region;
u32 rom_addr;

- if (!res->flags)
+ if (resource_disabled(res))
return -1;

/* Nothing to enable if we're using a shadow copy in RAM */
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index bd74349..c77c204 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -222,7 +222,7 @@ static void pdev_assign_resources_prepare(struct pci_dev *dev,
if (r->flags & IORESOURCE_PCI_FIXED)
continue;

- if (!(r->flags) || r->parent)
+ if (resource_disabled(r) || r->parent)
continue;

r_align = __pci_resource_alignment(dev, r, realloc_head);
@@ -318,7 +318,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
list_for_each_entry_safe(add_res, tmp, realloc_head, list) {
res = add_res->res;
/* skip resource that has been reset */
- if (!res->flags)
+ if (resource_disabled(res))
goto out;

/* skip this resource if not found in head list */
@@ -2167,7 +2167,7 @@ static void pci_bus_dump_res(struct pci_bus *bus)
int i;

pci_bus_for_each_resource(bus, res, i) {
- if (!res || !res->end || !res->flags)
+ if (!res || !res->end || resource_disabled(res))
continue;

dev_printk(KERN_DEBUG, &bus->dev, "resource %d %pR\n", i, res);
@@ -2250,7 +2250,7 @@ static int iov_resources_unassigned(struct pci_dev *dev, void *data)
struct pci_bus_region region;

/* Not assigned or rejected by kernel? */
- if (!r->flags)
+ if (resource_disabled(r))
continue;

pcibios_resource_to_bus(dev->bus, &region, r);
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 59271ee..2f901f7 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -45,7 +45,7 @@ void pci_update_resource(struct pci_dev *dev, int resno)
* Ignore resources for unimplemented BARs and unused resource slots
* for 64 bit BARs.
*/
- if (!res->flags)
+ if (resource_disabled(res))
return;

if (res->flags & IORESOURCE_UNSET)
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 9053ac9..b388127 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -208,6 +208,10 @@ static inline bool resource_contains(struct resource *r1, struct resource *r2)
return r1->start <= r2->start && r1->end >= r2->end;
}

+static inline bool resource_disabled(struct resource *r)
+{
+ return !r->flags || (r->flags & IORESOURCE_DISABLED);
+}

/* Convenience shorthand with allocation */
#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0)
--
1.8.4.5