diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/ idle_6xx.S
index 019b02d..0138d88 100644
--- a/arch/powerpc/kernel/idle_6xx.S
+++ b/arch/powerpc/kernel/idle_6xx.S
@@ -151,19 +151,20 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 * Return from NAP/DOZE mode, restore some CPU specific registers,
 * we are called with DR/IR still off and r2 containing physical
 * address of current.  R11 points to the exception frame (physical
- * address).  We have to preserve r10.
+ * address).  We have to preserve r10.  R9 contains the physical
+ * address of thread_info.
 */
_GLOBAL(power_save_ppc32_restore)
-       lwz     r9,_LINK(r11)           /* interrupted in ppc6xx_idle: */
-       stw     r9,_NIP(r11)            /* make it do a blr */
-
#ifdef CONFIG_SMP
-       mfspr   r12,SPRN_SPRG3
-       lwz     r11,TI_CPU(r12)         /* get cpu number * 4 */
+       lwz     r11,TI_CPU(r9)          /* get cpu number * 4 */
        slwi    r11,r11,2
#else
        li      r11,0
#endif
+
+       lwz     r9,_LINK(r11)           /* interrupted in ppc6xx_idle: */
+       stw     r9,_NIP(r11)            /* make it do a blr */
+

this is just brain damaged as I'm clobber r11 before setting up r9 with LR. V2 of the patch does things right.

- k
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev

Reply via email to