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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: Ralf Baechle <ralf@linux-mips.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ralf Baechle 2006-10-19 23:28:34 -07:00 committed by Linus Torvalds
parent a31baca58c
commit 8c7c7c9bf3
1 changed files with 4 additions and 1 deletions
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5
include/asm-generic/bug.h
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@ -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