diff options
| author | Alex Shi <alex.shi@linaro.org> | 2015-03-13 09:15:58 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-03-13 15:21:35 +0800 |
| commit | 438628396ca8a44f6b710a73612939bc54633d7c (patch) | |
| tree | bf318740f48ff4699cd0154e900507597dae835e /lib | |
| parent | 5afe132e300375c685e60d80d6e5e6a822d216d6 (diff) | |
| parent | 0d590a1ecd1ad44b2dae2bcdc5a6cb24a7080489 (diff) | |
Merge branch 'linux-linaro-lsk-v3.14' into linux-linaro-lsk-v3.14-android
Remove cpuinfo_arm64/cpuinfo_store_cpu() that comes from commit
42b34c73ae40(used for stable kernel only), since we have
newer commit 5aa9ef6f286.
Conflicts:
arch/arm64/include/asm/cputype.h
arch/arm64/kernel/setup.c
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/checksum.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/checksum.c b/lib/checksum.c index 129775eb6de6..8b39e86dbab5 100644 --- a/lib/checksum.c +++ b/lib/checksum.c @@ -181,6 +181,15 @@ csum_partial_copy(const void *src, void *dst, int len, __wsum sum) EXPORT_SYMBOL(csum_partial_copy); #ifndef csum_tcpudp_nofold +static inline u32 from64to32(u64 x) +{ + /* add up 32-bit and 32-bit for 32+c bit */ + x = (x & 0xffffffff) + (x >> 32); + /* add up carry.. */ + x = (x & 0xffffffff) + (x >> 32); + return (u32)x; +} + __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, unsigned short proto, @@ -195,8 +204,7 @@ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, #else s += (proto + len) << 8; #endif - s += (s >> 32); - return (__force __wsum)s; + return (__force __wsum)from64to32(s); } EXPORT_SYMBOL(csum_tcpudp_nofold); #endif |