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Commit 8c7c7c9b authored by Ralf Baechle's avatar Ralf Baechle Committed by Linus Torvalds
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[PATCH] Fix warnings for WARN_ON if CONFIG_BUG is disabled 



In most cases the return value of WARN_ON() is ignored.  If the generic
definition for the !CONFIG_BUG case is used this will result in a warning:

  CC      kernel/sched.o
In file included from include/linux/bio.h:25,
                 from include/linux/blkdev.h:14,
                 from kernel/sched.c:39:
include/linux/ioprio.h: In function ‘task_ioprio’:
include/linux/ioprio.h:50: warning: statement with no effect
kernel/sched.c: In function ‘context_switch’:
kernel/sched.c:1834: warning: statement with no effect

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent a31baca5

include/asm-generic/bug.h

+4 −1
Original line number Diff line number Diff line
@@ -37,7 +37,10 @@ 
#endif



#ifndef HAVE_ARCH_WARN_ON

#define WARN_ON(condition) unlikely((condition))

#define WARN_ON(condition) ({						\

	typeof(condition) __ret_warn_on = (condition);			\

	unlikely(__ret_warn_on);					\

})

#endif

#endif