Blackfin arch: fix bug - crashes in tcp_v4_send_reset

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 <[email protected]> Signed-off-by: Bryan Wu <[email protected]>
kishon · Jan 7, 2009 · b13120d · b13120d
1 parent 7ad883a
commit b13120d
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/arch/blackfin/include/asm/checksum.h b/arch/blackfin/include/asm/checksum.h
@@ -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);
 }