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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: Yuanyuan Zhong <zyy@motorola.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Yuanyuan Zhong 2013-10-30 17:31:49 +01:00 committed by Russell King
parent 0ea1ec713f
commit 384b38b669
1 changed files with 3 additions and 3 deletions
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6
arch/arm/vfp/vfpmodule.c
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@ -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;
}