usb: hub: take hub->hdev reference when processing from eventlist

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / core / hub.c

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a5631849017fbc7a01b5d8156d865d9f0451d558..5ff0abc345350d052e769b2a7f7cf08718b70075 100644 (file)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4702,9 +4702,10 @@ static void hub_events(void)
 
                hub = list_entry(tmp, struct usb_hub, event_list);
                kref_get(&hub->kref);
+               hdev = hub->hdev;
+               usb_get_dev(hdev);
                spin_unlock_irq(&hub_event_lock);
 
-               hdev = hub->hdev;
                hub_dev = hub->intfdev;
                intf = to_usb_interface(hub_dev);
                dev_dbg(hub_dev, "state %d ports %d chg %04x evt %04x\n",
@@ -4919,6 +4920,7 @@ static void hub_events(void)
                usb_autopm_put_interface(intf);
  loop_disconnected:
                usb_unlock_device(hdev);
+               usb_put_dev(hdev);
                kref_put(&hub->kref, hub_release);
 
         } /* end while (1) */