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ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu
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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>
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Yuanyuan Zhong authored and Russell King committed Oct 30, 2013
1 parent 0ea1ec7 commit 384b38b
Showing 1 changed file with 3 additions and 3 deletions.
6 changes: 3 additions & 3 deletions arch/arm/vfp/vfpmodule.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
}
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