diff options
| author | David S. Miller <davem@davemloft.net> | 2014-11-16 13:19:32 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-16 13:19:32 -0800 |
| commit | 5a2b59d3993e8ca4f7788a48a23e5cb303f26954 (patch) | |
| tree | 6924ab034074c2071e4fcd04ce5d66f08f79988f | |
| parent | 1a17fdc4f4ed06b63fac1937470378a5441a663a (diff) | |
| download | op-kernel-dev-5a2b59d3993e8ca4f7788a48a23e5cb303f26954.zip op-kernel-dev-5a2b59d3993e8ca4f7788a48a23e5cb303f26954.tar.gz | |
sparc64: Fix constraints on swab helpers.
We are reading the memory location, so we have to have a memory
constraint in there purely for the sake of showing the data flow
to the compiler.
Reported-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/include/uapi/asm/swab.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/sparc/include/uapi/asm/swab.h b/arch/sparc/include/uapi/asm/swab.h index a34ad07..4c7c12d 100644 --- a/arch/sparc/include/uapi/asm/swab.h +++ b/arch/sparc/include/uapi/asm/swab.h @@ -9,9 +9,9 @@ static inline __u16 __arch_swab16p(const __u16 *addr) { __u16 ret; - __asm__ __volatile__ ("lduha [%1] %2, %0" + __asm__ __volatile__ ("lduha [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab16p __arch_swab16p @@ -20,9 +20,9 @@ static inline __u32 __arch_swab32p(const __u32 *addr) { __u32 ret; - __asm__ __volatile__ ("lduwa [%1] %2, %0" + __asm__ __volatile__ ("lduwa [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab32p __arch_swab32p @@ -31,9 +31,9 @@ static inline __u64 __arch_swab64p(const __u64 *addr) { __u64 ret; - __asm__ __volatile__ ("ldxa [%1] %2, %0" + __asm__ __volatile__ ("ldxa [%2] %3, %0" : "=r" (ret) - : "r" (addr), "i" (ASI_PL)); + : "m" (*addr), "r" (addr), "i" (ASI_PL)); return ret; } #define __arch_swab64p __arch_swab64p |
