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| author | David S. Miller <davem@davemloft.net> | 2018-10-27 01:39:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-01 11:13:47 +0300 |
| commit | 34589bee6edd2381db775aaf0af87380a533c026 (patch) | |
| tree | 5416a9fdc4ce1410680f5cabc8ca1cf8b04766d6 /arch/sparc/include | |
| parent | 88b0950ca323a7b18b6337beb0a028b7458c06f9 (diff) | |
| download | linux-34589bee6edd2381db775aaf0af87380a533c026.tar.xz | |
sparc64: Rework xchg() definition to avoid warnings.
[ Upstream commit 6c2fc9cddc1ffdef8ada1dc8404e5affae849953 ]
Such as:
fs/ocfs2/file.c: In function ‘ocfs2_file_write_iter’:
./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value]
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
and
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c: In function ‘ixgbevf_xdp_setup’:
./arch/sparc/include/asm/cmpxchg_64.h:55:22: warning: value computed is not used [-Wunused-value]
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/cmpxchg_64.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/sparc/include/asm/cmpxchg_64.h b/arch/sparc/include/asm/cmpxchg_64.h index f71ef3729888..316faa0130ba 100644 --- a/arch/sparc/include/asm/cmpxchg_64.h +++ b/arch/sparc/include/asm/cmpxchg_64.h @@ -52,7 +52,12 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long return val; } -#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) +#define xchg(ptr,x) \ +({ __typeof__(*(ptr)) __ret; \ + __ret = (__typeof__(*(ptr))) \ + __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))); \ + __ret; \ +}) void __xchg_called_with_bad_pointer(void); |