[PATCH] PCI: pciehp: Always protect pciehp_disable_slot() with hotplug mutex

[Guenter Roeck <linux@roeck-us.net>]

When called from pciehp_sysfs_disable_slot(), the call to
pciehp_disable_slot() was not protected by the hotplug mutex.

Cc: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/pci/hotplug/pciehp_ctrl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 4c8f4cde6854..880978b6d534 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -511,7 +511,9 @@ int pciehp_sysfs_disable_slot(struct slot *p_slot)
 	case STATIC_STATE:
 		p_slot->state = POWEROFF_STATE;
 		mutex_unlock(&p_slot->lock);
+		mutex_lock(&p_slot->hotplug_lock);
 		retval = pciehp_disable_slot(p_slot);
+		mutex_unlock(&p_slot->hotplug_lock);
 		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
 		break;
-- 
2.1.4