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Commit 384b38b6 authored by Yuanyuan Zhong's avatar Yuanyuan Zhong Committed by Russell King
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ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu 



The CPU_DYING notifier is called by cpu stopper task which
does not own the context held in the VFP hardware. Calling
vfp_force_reload() has no effect.
Replace it with clearing vfp_current_hw_state.

Signed-off-by: default avatarYuanyuan Zhong <zyy@motorola.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 0ea1ec71

arch/arm/vfp/vfpmodule.c

+3 −3
Original line number Diff line number Diff line
@@ -642,9 +642,9 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp, 
static int vfp_hotplug(struct notifier_block *b, unsigned long action,

	void *hcpu)

{

	if (action == CPU_DYING || action == CPU_DYING_FROZEN) {

		vfp_force_reload((long)hcpu, current_thread_info());

	} else if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)

	if (action == CPU_DYING || action == CPU_DYING_FROZEN)

		vfp_current_hw_state[(long)hcpu] = NULL;

	else if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)

		vfp_enable(NULL);

	return NOTIFY_OK;

}