Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH 2/9] powerpc: mark xer clobbered in csum_add() | Date | Tue, 22 Sep 2015 16:34:21 +0200 (CEST) |
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addc uses carry so xer is clobbered in csum_add()
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/include/asm/checksum.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/checksum.h b/arch/powerpc/include/asm/checksum.h index e8d9ef4..d2ca07b 100644 --- a/arch/powerpc/include/asm/checksum.h +++ b/arch/powerpc/include/asm/checksum.h @@ -141,7 +141,7 @@ static inline __wsum csum_add(__wsum csum, __wsum addend) #else asm("addc %0,%0,%1;" "addze %0,%0;" - : "+r" (csum) : "r" (addend)); + : "+r" (csum) : "r" (addend) : "xer"); return csum; #endif } -- 2.1.0
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