[ARM PATCH] 2203/1: trivial asm optimization for csum code

Patch from Nicolas Pitre

Signed-off-by: Nicolas Pitre 
Signed-off-by: Russell King

arch/arm/lib/csumpartial.S

@@ -73,8 +73,7 @@ td3	.req	lr
 .done:		adc	r0, sum, #0		@ collect up the last carry
 		ldr	td0, [sp], #4
 		tst	td0, #1			@ check buffer alignment
-		movne	td0, r0, lsl #8		@ rotate checksum by 8 bits
-		orrne	r0, td0, r0, lsr #24
+		movne	r0, r0, ror #8		@ rotate checksum by 8 bits
 		ldr	pc, [sp], #4		@ return
 
 .not_aligned:	tst	buf, #1			@ odd address

arch/arm/lib/csumpartialcopygeneric.S

@@ -160,8 +160,7 @@ FN_ENTRY
 .done:		adc	r0, sum, #0
 		ldr	sum, [sp, #0]		@ dst
 		tst	sum, #1
-		movne	sum, r0, lsl #8
-		orrne	r0, sum, r0, lsr #24
+		movne	r0, r0, ror #8
 		load_regs	ea
 
 .src_not_aligned: