sparc64: Fix constraints on swab helpers.
[ Upstream commit 5a2b59d399
]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -9,9 +9,9 @@ static inline __u16 __arch_swab16p(const __u16 *addr)
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{
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__u16 ret;
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__asm__ __volatile__ ("lduha [%1] %2, %0"
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__asm__ __volatile__ ("lduha [%2] %3, %0"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PL));
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: "m" (*addr), "r" (addr), "i" (ASI_PL));
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return ret;
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}
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#define __arch_swab16p __arch_swab16p
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@ -20,9 +20,9 @@ static inline __u32 __arch_swab32p(const __u32 *addr)
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{
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__u32 ret;
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__asm__ __volatile__ ("lduwa [%1] %2, %0"
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__asm__ __volatile__ ("lduwa [%2] %3, %0"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PL));
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: "m" (*addr), "r" (addr), "i" (ASI_PL));
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return ret;
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}
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#define __arch_swab32p __arch_swab32p
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@ -31,9 +31,9 @@ static inline __u64 __arch_swab64p(const __u64 *addr)
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{
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__u64 ret;
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__asm__ __volatile__ ("ldxa [%1] %2, %0"
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__asm__ __volatile__ ("ldxa [%2] %3, %0"
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: "=r" (ret)
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: "r" (addr), "i" (ASI_PL));
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: "m" (*addr), "r" (addr), "i" (ASI_PL));
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return ret;
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}
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#define __arch_swab64p __arch_swab64p
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