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authorOllie Wild <aaw@rincewind.tv>2006-09-27 14:46:24 +0900
committerPaul Mundt <lethal@linux-sh.org>2006-09-27 14:46:24 +0900
commit24ab54cb49c099d691c68fdd1ac6a0c2f5177da4 (patch)
treea75607c77faadb28a994a056469165386406a8e4 /arch/sh/tools
parent8b395265f81817385f12e62f03f795efb732a445 (diff)
downloadlinux-2.6.34-ux500-24ab54cb49c099d691c68fdd1ac6a0c2f5177da4.tar.gz
sh: Fix TCP payload csum bug in csum_partial_copy_generic().
There's a bug in the Hitachi SuperH csum_partial_copy_generic() implementation. If the supplied length is 1 (and several alignment conditions are met), the function immediately branches to label 4. However, the assembly at label 4 expects the length to be stored in register r2. Since this has not occurred, subsequent behavior is undefined. This can cause bad payload checksums in TCP connections. I've fixed the problem by initializing register r2 prior to the branch instruction. Signed-off-by: Ollie Wild <aaw@rincewind.tv> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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