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[PATCH] Fix "value computed is not used" compile warnings with gcc-4.1

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Fix gcc4.1 compile warnings "value computed is not used" with
set_current_state() and set_task_state() on i386/SMP and x86-64.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Takashi Iwai 2006-02-04 23:28:05 -08:00 committed by Linus Torvalds
parent b53e8f68e0
commit 911b0ad25d
2 changed files with 2 additions and 2 deletions
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2
include/asm-i386/system.h
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@ -507,7 +507,7 @@ struct alt_instr {
#define smp_rmb() rmb()
#define smp_wmb() wmb()
#define smp_read_barrier_depends() read_barrier_depends()
#define set_mb(var, value) do { xchg(&var, value); } while (0)
#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
#else
#define smp_mb() barrier()
#define smp_rmb() barrier()

2
include/asm-x86_64/system.h
View file

@ -327,7 +327,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
#define wmb() asm volatile("" ::: "memory")
#endif
#define read_barrier_depends() do {} while(0)
#define set_mb(var, value) do { xchg(&var, value); } while (0)
#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
#define set_wmb(var, value) do { var = value; wmb(); } while (0)
#define warn_if_not_ulong(x) do { unsigned long foo; (void) (&(x) == &foo); } while (0)