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Commit cebc04ba authored by Andrew Morton's avatar Andrew Morton Committed by Greg Kroah-Hartman
Browse files

add CONFIG_ENABLE_MUST_CHECK 



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

Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 4a7fb636

include/linux/compiler.h

+5 −0
Original line number Diff line number Diff line
@@ -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.

lib/Kconfig.debug

+7 −0
Original line number Diff line number Diff line
@@ -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"