| From | Greg Kroah-Hartman <> | Subject | [ 11/65] ARM: 7476/1: vfp: only clear vfp state for current cpu in vfp_pm_suspend | Date | Mon, 13 Aug 2012 15:13:55 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
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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; }
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