From 7888bc2b4778fda267a6e6422c4497dba865a47a Mon Sep 17 00:00:00 2001 From: Kumar Gala <galak@kernel.crashing.org> Date: Tue, 26 Aug 2008 12:08:56 +1000 Subject: powerpc: Fix for getting CPU number in power_save_ppc32_restore() The calculation to get TI_CPU based off of SPRG3 was just plain wrong, meaning that we were getting garbage for the CPU number on 6xx/G3/G4 based SMP boxes in this code. Just offset off the stack pointer (to get to thread_info) like all the other references to TI_CPU do. This was pointed out by Chen Gong <G.Chen@freescale.com> [paulus@samba.org - use rlwinm r12,r11,... instead of rlwinm r12,r1,...; tophys()] Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> --- arch/powerpc/kernel/idle_6xx.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/kernel/idle_6xx.S') diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S index 019b02d8844f..15c611de1ee2 100644 --- a/arch/powerpc/kernel/idle_6xx.S +++ b/arch/powerpc/kernel/idle_6xx.S @@ -158,7 +158,7 @@ _GLOBAL(power_save_ppc32_restore) stw r9,_NIP(r11) /* make it do a blr */ #ifdef CONFIG_SMP - mfspr r12,SPRN_SPRG3 + rlwinm r12,r11,0,0,31-THREAD_SHIFT lwz r11,TI_CPU(r12) /* get cpu number * 4 */ slwi r11,r11,2 #else -- cgit v1.2.2