[PATCH] alpha: fix compile failures with gcc-4.3 (bug #10438)

From: Ivan Kokshaysky
Date: Fri Jun 20 2008 - 19:58:13 EST

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Vast majority of these build failures are gcc-4.3 warnings
about static functions and objects being referenced from
non-static (read: "extern inline") functions, in conjunction
with our -Werror.

We cannot just convert "extern inline" to "static inline",
as people keep suggesting all the time, because "extern inline"
logic is crucial for generic kernel build.
So
- just make sure that all callees of critical "extern inline"
functions are also "extern inline";
- use "static inline", wherever it's possible.

traps.c: work around gcc-4.3 being too smart about array
bounds-checking.

TODO: add "gnu_inline" attribute to all our "extern inline"
functions to ensure desired behaviour with future compilers.

Signed-off-by: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/kernel/core_t2.c | 2 ++
arch/alpha/kernel/traps.c | 3 ++-
include/asm-alpha/core_mcpcia.h | 2 +-
include/asm-alpha/core_t2.h | 14 +++++++-------
include/asm-alpha/io.h | 6 +++---
include/asm-alpha/mmu_context.h | 6 +++---
include/asm-alpha/system.h | 10 +++++-----
include/asm-alpha/vga.h | 6 +++---
8 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/arch/alpha/kernel/core_t2.c b/arch/alpha/kernel/core_t2.c
index c075029..d9980d4 100644
--- a/arch/alpha/kernel/core_t2.c
+++ b/arch/alpha/kernel/core_t2.c
@@ -74,6 +74,8 @@
# define DBG(args)
#endif

+DEFINE_SPINLOCK(t2_hae_lock);
+
static volatile unsigned int t2_mcheck_any_expected;
static volatile unsigned int t2_mcheck_last_taken;

diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index dc57790..c778779 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -447,7 +447,7 @@ struct unaligned_stat {

/* Macro for exception fixup code to access integer registers. */
-#define una_reg(r) (regs->regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])
+#define una_reg(r) (_regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])

asmlinkage void
@@ -456,6 +456,7 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
{
long error, tmp1, tmp2, tmp3, tmp4;
unsigned long pc = regs->pc - 4;
+ unsigned long *_regs = regs->regs;
const struct exception_table_entry *fixup;

unaligned[0].count++;
diff --git a/include/asm-alpha/core_mcpcia.h b/include/asm-alpha/core_mcpcia.h
index 525b4f6..acf55b4 100644
--- a/include/asm-alpha/core_mcpcia.h
+++ b/include/asm-alpha/core_mcpcia.h
@@ -261,7 +261,7 @@ struct el_MCPCIA_uncorrected_frame_mcheck {
}
#endif

-static inline int __mcpcia_is_mmio(unsigned long addr)
+extern inline int __mcpcia_is_mmio(unsigned long addr)
{
return (addr & 0x80000000UL) == 0;
}
diff --git a/include/asm-alpha/core_t2.h b/include/asm-alpha/core_t2.h
index 90e6b5d..46bfff5 100644
--- a/include/asm-alpha/core_t2.h
+++ b/include/asm-alpha/core_t2.h
@@ -356,13 +356,13 @@ struct el_t2_frame_corrected {
#define vip volatile int *
#define vuip volatile unsigned int *

-static inline u8 t2_inb(unsigned long addr)
+extern inline u8 t2_inb(unsigned long addr)
{
long result = *(vip) ((addr << 5) + T2_IO + 0x00);
return __kernel_extbl(result, addr & 3);
}

-static inline void t2_outb(u8 b, unsigned long addr)
+extern inline void t2_outb(u8 b, unsigned long addr)
{
unsigned long w;

@@ -371,13 +371,13 @@ static inline void t2_outb(u8 b, unsigned long addr)
mb();
}

-static inline u16 t2_inw(unsigned long addr)
+extern inline u16 t2_inw(unsigned long addr)
{
long result = *(vip) ((addr << 5) + T2_IO + 0x08);
return __kernel_extwl(result, addr & 3);
}

-static inline void t2_outw(u16 b, unsigned long addr)
+extern inline void t2_outw(u16 b, unsigned long addr)
{
unsigned long w;

@@ -386,12 +386,12 @@ static inline void t2_outw(u16 b, unsigned long addr)
mb();
}

-static inline u32 t2_inl(unsigned long addr)
+extern inline u32 t2_inl(unsigned long addr)
{
return *(vuip) ((addr << 5) + T2_IO + 0x18);
}

-static inline void t2_outl(u32 b, unsigned long addr)
+extern inline void t2_outl(u32 b, unsigned long addr)
{
*(vuip) ((addr << 5) + T2_IO + 0x18) = b;
mb();
@@ -435,7 +435,7 @@ static inline void t2_outl(u32 b, unsigned long addr)
set_hae(msb); \
}

-static DEFINE_SPINLOCK(t2_hae_lock);
+extern spinlock_t t2_hae_lock;

/*
* NOTE: take T2_DENSE_MEM off in each readX/writeX routine, since
diff --git a/include/asm-alpha/io.h b/include/asm-alpha/io.h
index 38f18cf..e971ab0 100644
--- a/include/asm-alpha/io.h
+++ b/include/asm-alpha/io.h
@@ -35,7 +35,7 @@
* register not being up-to-date with respect to the hardware
* value.
*/
-static inline void __set_hae(unsigned long new_hae)
+extern inline void __set_hae(unsigned long new_hae)
{
unsigned long flags;
local_irq_save(flags);
@@ -49,7 +49,7 @@ static inline void __set_hae(unsigned long new_hae)
local_irq_restore(flags);
}

-static inline void set_hae(unsigned long new_hae)
+extern inline void set_hae(unsigned long new_hae)
{
if (new_hae != alpha_mv.hae_cache)
__set_hae(new_hae);
@@ -176,7 +176,7 @@ REMAP2(u64, writeq, volatile)
#undef REMAP1
#undef REMAP2

-static inline void __iomem *generic_ioportmap(unsigned long a)
+extern inline void __iomem *generic_ioportmap(unsigned long a)
{
return alpha_mv.mv_ioportmap(a);
}
diff --git a/include/asm-alpha/mmu_context.h b/include/asm-alpha/mmu_context.h
index 6a5be1f..86c08a0 100644
--- a/include/asm-alpha/mmu_context.h
+++ b/include/asm-alpha/mmu_context.h
@@ -23,7 +23,7 @@
#endif

-extern inline unsigned long
+static inline unsigned long
__reload_thread(struct pcb_struct *pcb)
{
register unsigned long a0 __asm__("$16");
@@ -114,7 +114,7 @@ extern unsigned long last_asn;
#define __MMU_EXTERN_INLINE
#endif

-static inline unsigned long
+extern inline unsigned long
__get_new_mm_context(struct mm_struct *mm, long cpu)
{
unsigned long asn = cpu_last_asn(cpu);
@@ -226,7 +226,7 @@ ev4_activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
# endif
#endif

-extern inline int
+static inline int
init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
int i;
diff --git a/include/asm-alpha/system.h b/include/asm-alpha/system.h
index ed221d6..afe20fa 100644
--- a/include/asm-alpha/system.h
+++ b/include/asm-alpha/system.h
@@ -184,7 +184,7 @@ enum amask_enum {
__amask; })

#define __CALL_PAL_R0(NAME, TYPE) \
-static inline TYPE NAME(void) \
+extern inline TYPE NAME(void) \
{ \
register TYPE __r0 __asm__("$0"); \
__asm__ __volatile__( \
@@ -196,7 +196,7 @@ static inline TYPE NAME(void) \
}

#define __CALL_PAL_W1(NAME, TYPE0) \
-static inline void NAME(TYPE0 arg0) \
+extern inline void NAME(TYPE0 arg0) \
{ \
register TYPE0 __r16 __asm__("$16") = arg0; \
__asm__ __volatile__( \
@@ -207,7 +207,7 @@ static inline void NAME(TYPE0 arg0) \
}

#define __CALL_PAL_W2(NAME, TYPE0, TYPE1) \
-static inline void NAME(TYPE0 arg0, TYPE1 arg1) \
+extern inline void NAME(TYPE0 arg0, TYPE1 arg1) \
{ \
register TYPE0 __r16 __asm__("$16") = arg0; \
register TYPE1 __r17 __asm__("$17") = arg1; \
@@ -219,7 +219,7 @@ static inline void NAME(TYPE0 arg0, TYPE1 arg1) \
}

#define __CALL_PAL_RW1(NAME, RTYPE, TYPE0) \
-static inline RTYPE NAME(TYPE0 arg0) \
+extern inline RTYPE NAME(TYPE0 arg0) \
{ \
register RTYPE __r0 __asm__("$0"); \
register TYPE0 __r16 __asm__("$16") = arg0; \
@@ -232,7 +232,7 @@ static inline RTYPE NAME(TYPE0 arg0) \
}

#define __CALL_PAL_RW2(NAME, RTYPE, TYPE0, TYPE1) \
-static inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1) \
+extern inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1) \
{ \
register RTYPE __r0 __asm__("$0"); \
register TYPE0 __r16 __asm__("$16") = arg0; \
diff --git a/include/asm-alpha/vga.h b/include/asm-alpha/vga.h
index e8df1e7..c00106b 100644
--- a/include/asm-alpha/vga.h
+++ b/include/asm-alpha/vga.h
@@ -13,7 +13,7 @@
#define VT_BUF_HAVE_MEMSETW
#define VT_BUF_HAVE_MEMCPYW

-extern inline void scr_writew(u16 val, volatile u16 *addr)
+static inline void scr_writew(u16 val, volatile u16 *addr)
{
if (__is_ioaddr(addr))
__raw_writew(val, (volatile u16 __iomem *) addr);
@@ -21,7 +21,7 @@ extern inline void scr_writew(u16 val, volatile u16 *addr)
*addr = val;
}

-extern inline u16 scr_readw(volatile const u16 *addr)
+static inline u16 scr_readw(volatile const u16 *addr)
{
if (__is_ioaddr(addr))
return __raw_readw((volatile const u16 __iomem *) addr);
@@ -29,7 +29,7 @@ extern inline u16 scr_readw(volatile const u16 *addr)
return *addr;
}

-extern inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
+static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
{
if (__is_ioaddr(s))
memsetw_io((u16 __iomem *) s, c, count);
--
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Next message: Kevin Winchester: "Re: Bisecting tip/auto-x86-next?"
Previous message: Ivan Kokshaysky: "[PATCH] alpha: fix module load failures on smp (bug #10926)"
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