On Mon, Aug 01, 2016 at 02:56:05PM +0200, Christophe Leroy wrote:
> --- a/arch/powerpc/lib/checksum_32.S
> +++ b/arch/powerpc/lib/checksum_32.S
> @@ -127,7 +127,8 @@ _GLOBAL(csum_partial_copy_generic)
>       stw     r7,12(r1)
>       stw     r8,8(r1)
>  
> -     andi.   r0,r4,1                 /* is destination address even ? */
> +     rlwinm  r0,r4,3,0x8             /* is destination address even ? */
> +     rlwnm   r6,r6,r0,0,31           /* swap bytes for odd destination */
>       cmplwi  cr7,r0,0
>       addic   r12,r6,0
>       addi    r6,r4,-4

That does not "swap bytes"; it shifts the word up by 8 bits, instead.
That may or may not do what is intended.


Segher

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