| From a84b895a2348f0dbff31b71ddf954f70a6cde368 Mon Sep 17 00:00:00 2001 |
| From: Colin Cross <ccross@android.com> |
| Date: Fri, 20 Jul 2012 02:03:43 +0100 |
| Subject: ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend |
| |
| From: Colin Cross <ccross@android.com> |
| |
| commit a84b895a2348f0dbff31b71ddf954f70a6cde368 upstream. |
| |
| vfp_pm_suspend runs on each cpu, only clear the hardware state |
| pointer for the current cpu. Prevents a possible crash if one |
| cpu clears the hw state pointer when another cpu has already |
| checked if it is valid. |
| |
| Signed-off-by: Colin Cross <ccross@android.com> |
| Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| arch/arm/vfp/vfpmodule.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/arch/arm/vfp/vfpmodule.c |
| +++ b/arch/arm/vfp/vfpmodule.c |
| @@ -460,7 +460,7 @@ static int vfp_pm_suspend(void) |
| } |
| |
| /* clear any information we had about last context state */ |
| - memset(vfp_current_hw_state, 0, sizeof(vfp_current_hw_state)); |
| + vfp_current_hw_state[ti->cpu] = NULL; |
| |
| return 0; |
| } |
