Commit 8e7fc18b authored Apr 30, 2012 by Arnd Bergmann

ARM: warnings in arch/arm/include/asm/uaccess.h



On NOMMU ARM, the __addr_ok() and __range_ok() macros do not evaluate
their arguments, which may lead to harmless build warnings in some
code where the variables are not used otherwise. Adding a cast to void
gets rid of the warning and does not make any semantic changes.

Without this patch, building at91x40_defconfig results in:

fs/read_write.c: In function 'rw_copy_check_uvector':
fs/read_write.c:684:9: warning: unused variable 'buf' [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>

parent f6d5d8a5

arch/arm/include/asm/uaccess.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -200,8 +200,8 @@ extern int __put_user_8(void *, unsigned long long);
		#define USER_DS KERNEL_DS

		#define segment_eq(a,b) (1)
		#define __addr_ok(addr) (1)
		#define __range_ok(addr,size) (0)
		#define __addr_ok(addr) ((void)(addr),1)
		#define __range_ok(addr,size) ((void)(addr),0)
		#define get_fs() (KERNEL_DS)

		static inline void set_fs(mm_segment_t fs)