X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=arch%2Fpowerpc%2Flib%2Fchecksum_32.S;h=ea29a5d67743722dee2ca0f7fb15c98ad4b01e05;hp=da678bdfc4ac12213a7f8dfe58e08ae13fe212ab;hb=84d69848c97faab0c25aa2667b273404d2e2a64a;hpb=590abbdd273304b55824bcb9ea91840ea375575d

diff --git a/arch/powerpc/lib/checksum_32.S b/arch/powerpc/lib/checksum_32.S
index da678bdfc4ac..ea29a5d67743 100644
--- a/arch/powerpc/lib/checksum_32.S
+++ b/arch/powerpc/lib/checksum_32.S
@@ -129,17 +129,19 @@ _GLOBAL(csum_partial_copy_generic)
 	stw	r7,12(r1)
 	stw	r8,8(r1)
 
-	andi.	r0,r4,1			/* is destination address even ? */
-	cmplwi	cr7,r0,0
 	addic	r12,r6,0
 	addi	r6,r4,-4
 	neg	r0,r4
 	addi	r4,r3,-4
 	andi.	r0,r0,CACHELINE_MASK	/* # bytes to start of cache line */
+	crset	4*cr7+eq
 	beq	58f
 
 	cmplw	0,r5,r0			/* is this more than total to do? */
 	blt	63f			/* if not much to do */
+	rlwinm	r7,r6,3,0x8
+	rlwnm	r12,r12,r7,0,31	/* odd destination address: rotate one byte */
+	cmplwi	cr7,r7,0	/* is destination address even ? */
 	andi.	r8,r0,3			/* get it word-aligned first */
 	mtctr	r8
 	beq+	61f
@@ -239,7 +241,7 @@ _GLOBAL(csum_partial_copy_generic)
 66:	addze	r3,r12
 	addi	r1,r1,16
 	beqlr+	cr7
-	rlwinm	r3,r3,8,0,31	/* swap bytes for odd destination */
+	rlwinm	r3,r3,8,0,31	/* odd destination address: rotate one byte */
 	blr
 
 /* read fault */