arch/i386/lib/checksum.S: Handle zero length.

diff --git a/arch/i386/lib/checksum.S b/arch/i386/lib/checksum.S
index bfc638953160e84b64f2cc1ca726a6cabd569027..e5431b2f7b24e9505c09258607840d881c821c6a 100644 (file)
--- a/arch/i386/lib/checksum.S
+++ b/arch/i386/lib/checksum.S
@@ -149,6 +149,8 @@ csum_partial:
 30:    subl $2, %ecx          
        ja 20b                 
        je 32f
+       addl $2, %ecx
+       jz 80f
        movzbl (%esi),%ebx      # csumming 1 byte, 2-aligned
        addl %ebx, %eax
        adcl $0, %eax