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authorLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2017-06-29 16:31:40 +0200
committerWill Deacon <will.deacon@arm.com>2017-06-29 16:32:43 +0100
commit50a4b05609929003ce98987bb901ee10fe21fb20 (patch)
tree4274a0b27430a7c7fbb998299d626d317d7c852b /arch/arm64
parentf0cda7e6dc5893b4b4daa3440512fc1226bc983f (diff)
arm64: add missing conversion to __wsum in ip_fast_csum()
ARM64 implementation of ip_fast_csum() do most of the work in 128 or 64 bit and call csum_fold() to finalize. csum_fold() itself take a __wsum argument, to insure that this value is always a 32bit native-order value. Fix this by adding the sadly needed '__force' to cast the native 'sum' to the type '__wsum'. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/asm/checksum.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/checksum.h b/arch/arm64/include/asm/checksum.h
index 09f65339d66d..0b6f5a7d4027 100644
--- a/arch/arm64/include/asm/checksum.h
+++ b/arch/arm64/include/asm/checksum.h
@@ -42,7 +42,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
} while (--ihl);
sum += ((sum >> 32) | (sum << 32));
- return csum_fold(sum >> 32);
+ return csum_fold((__force u32)(sum >> 32));
}
#define ip_fast_csum ip_fast_csum