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Blackfin arch: fix bug - crashes in tcp_v4_send_reset

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Michael says that some bugs are crashes in tcp_v4_send_reset.
There's a missing clobber of "CC" in our checksum assembly
statement; fixing this makes the generated code look much saner.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Bernd Schmidt 2009-01-07 23:14:39 +08:00 committed by Bryan Wu
parent 7ad883a94d
commit b13120d23b
1 changed files with 2 additions and 1 deletions
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3
arch/blackfin/include/asm/checksum.h
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@ -78,7 +78,8 @@ csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
"%0 = %0 + %4;\n\t"
"NOP;\n\t"
: "=d" (sum)
: "d" (daddr), "d" (saddr), "d" ((ntohs(len)<<16)+proto*256), "d" (1), "0"(sum));
: "d" (daddr), "d" (saddr), "d" ((ntohs(len)<<16)+proto*256), "d" (1), "0"(sum)
: "CC");
return (sum);
}