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Commit 911b0ad2 authored by Takashi Iwai's avatar Takashi Iwai Committed by Linus Torvalds
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[PATCH] Fix "value computed is not used" compile warnings with gcc-4.1 



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: default avatarTakashi Iwai <tiwai@suse.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b53e8f68

include/asm-i386/system.h

+1 −1
Original line number Diff line number Diff line
@@ -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()

include/asm-x86_64/system.h

+1 −1
Original line number Diff line number Diff line
@@ -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)