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add CONFIG_ENABLE_MUST_CHECK

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Those 1500 warnings can be a bit of a pain.  Add a config option to shut them
up.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Andrew Morton 2006-08-14 22:43:18 -07:00 committed by Greg Kroah-Hartman
parent 4a7fb6363f
commit cebc04ba9a
2 changed files with 12 additions and 0 deletions
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5
include/linux/compiler.h
View file

@ -99,6 +99,11 @@ extern void __chk_io_ptr(void __iomem *);
#define __must_check
#endif
#ifndef CONFIG_ENABLE_MUST_CHECK
#undef __must_check
#define __must_check
#endif
/*
* Allow us to avoid 'defined but not used' warnings on functions and data,
* as well as force them to be emitted to the assembly file.

7
lib/Kconfig.debug
View file

@ -8,6 +8,13 @@ config PRINTK_TIME
operations. This is useful for identifying long delays
in kernel startup.
config ENABLE_MUST_CHECK
bool "Enable __must_check logic"
default y
help
Enable the __must_check logic in the kernel build. Disable this to
suppress the "warning: ignoring return value of 'foo', declared with
attribute warn_unused_result" messages.
config MAGIC_SYSRQ
bool "Magic SysRq key"