summaryrefslogtreecommitdiff
path: root/arch/x86/lib/cmpxchg.c
diff options
context:
space:
mode:
authorMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-14 20:13:19 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-14 20:13:19 +0400
commitf2e5d078f7f02d4289db31f5f63e23e39914075e (patch)
treec739a3e70846284ae2ce3d98cecc2be1ffebe2e2 /arch/x86/lib/cmpxchg.c
parentc66a566afbe6e2c94b1ae70f70cc1e3d4c73639b (diff)
parent836dc9e3fbbab0c30aa6e664417225f5c1fb1c39 (diff)
downloadlinux-f2e5d078f7f02d4289db31f5f63e23e39914075e.tar.xz
Merge tag 'v3.8-rc7' into regulator-core
Linux 3.8-rc7
Diffstat (limited to 'arch/x86/lib/cmpxchg.c')
-rw-r--r--arch/x86/lib/cmpxchg.c54
1 files changed, 0 insertions, 54 deletions
diff --git a/arch/x86/lib/cmpxchg.c b/arch/x86/lib/cmpxchg.c
deleted file mode 100644
index 5d619f6df3ee..000000000000
--- a/arch/x86/lib/cmpxchg.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * cmpxchg*() fallbacks for CPU not supporting these instructions
- */
-
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include <linux/module.h>
-
-#ifndef CONFIG_X86_CMPXCHG
-unsigned long cmpxchg_386_u8(volatile void *ptr, u8 old, u8 new)
-{
- u8 prev;
- unsigned long flags;
-
- /* Poor man's cmpxchg for 386. Unsuitable for SMP */
- local_irq_save(flags);
- prev = *(u8 *)ptr;
- if (prev == old)
- *(u8 *)ptr = new;
- local_irq_restore(flags);
- return prev;
-}
-EXPORT_SYMBOL(cmpxchg_386_u8);
-
-unsigned long cmpxchg_386_u16(volatile void *ptr, u16 old, u16 new)
-{
- u16 prev;
- unsigned long flags;
-
- /* Poor man's cmpxchg for 386. Unsuitable for SMP */
- local_irq_save(flags);
- prev = *(u16 *)ptr;
- if (prev == old)
- *(u16 *)ptr = new;
- local_irq_restore(flags);
- return prev;
-}
-EXPORT_SYMBOL(cmpxchg_386_u16);
-
-unsigned long cmpxchg_386_u32(volatile void *ptr, u32 old, u32 new)
-{
- u32 prev;
- unsigned long flags;
-
- /* Poor man's cmpxchg for 386. Unsuitable for SMP */
- local_irq_save(flags);
- prev = *(u32 *)ptr;
- if (prev == old)
- *(u32 *)ptr = new;
- local_irq_restore(flags);
- return prev;
-}
-EXPORT_SYMBOL(cmpxchg_386_u32);
-#endif