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[PATCH v2] ARM: vfp: Go back to clearing vfp_current_hw_state[]

From: festevam@gmail.com (Fabio Estevam)
Date: 2018-01-15 18:06:39
Also in: stable
Subsystem: arm port, arm/vfp support, the rest · Maintainers: Russell King, Linus Torvalds

From: Fabio Estevam <redacted>

Commit 384b38b66947 ("ARM: 7873/1: vfp: clear vfp_current_hw_state
for dying cpu") fixed the cpu dying notifier by clearing
vfp_current_hw_state[]. However commit e5b61bafe704 ("arm: Convert VFP
hotplug notifiers to state machine") incorrectly used the original
vfp_force_reload() function in the cpu dying notifier.

Fix it by going back to clearing vfp_current_hw_state[].

Fixes: e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine")
Cc: linux-stable <redacted>
Reported-by: Kohji Okuno <redacted>
Signed-off-by: Fabio Estevam <redacted>
---
Changes since v1:
- Improve the commit message

 arch/arm/vfp/vfpmodule.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index a71a48e..aa7496b 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -648,7 +648,7 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp,
  */
 static int vfp_dying_cpu(unsigned int cpu)
 {
-	vfp_force_reload(cpu, current_thread_info());
+	vfp_current_hw_state[cpu] = NULL;
 	return 0;
 }
 
-- 
2.7.4
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