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| author | Arnd Bergmann <arnd@arndb.de> | 2012-04-30 13:18:46 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-10-09 20:29:07 +0200 |
| commit | 8e7fc18b5eacc37b6e6fcf486ec4eafbfef91738 (patch) | |
| tree | 2daa83545c5c85b5ceb6712f1d189827ce94d0b4 | |
| parent | f6d5d8a5ed60c726354605877e8f8214fb11cc02 (diff) | |
| download | op-kernel-dev-8e7fc18b5eacc37b6e6fcf486ec4eafbfef91738.zip op-kernel-dev-8e7fc18b5eacc37b6e6fcf486ec4eafbfef91738.tar.gz | |
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>
| -rw-r--r-- | arch/arm/include/asm/uaccess.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 77bd79f..7e1f760 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -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) |
