[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 âtask_ioprioâ: include/linux/ioprio.h:50: warning: statement with no effect kernel/sched.c: In function âcontext_switchâ: 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>
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@ -37,7 +37,10 @@
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#endif
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#ifndef HAVE_ARCH_WARN_ON
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#define WARN_ON(condition) unlikely((condition))
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#define WARN_ON(condition) ({ \
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typeof(condition) __ret_warn_on = (condition); \
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unlikely(__ret_warn_on); \
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})
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#endif
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#endif
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