r8152: check RTL8152_UNPLUG and netif_running before autoresume

If the device is unplugged or !netif_running(), the workqueue
doesn't need to wake the device, and could return directly.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index ad9dd7d17508..0a30fd3f673d 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2857,15 +2857,18 @@ static void rtl_work_func_t(struct work_struct *work)
 {
         struct r8152 *tp = container_of(work, struct r8152, schedule.work);
 
+        /* If the device is unplugged or !netif_running(), the workqueue
+         * doesn't need to wake the device, and could return directly.
+         */
+        if (test_bit(RTL8152_UNPLUG, &tp->flags) || !netif_running(tp->netdev))
+                return;
+
         if (usb_autopm_get_interface(tp->intf) < 0)
                 return;
 
         if (!test_bit(WORK_ENABLE, &tp->flags))
                 goto out1;
 
-        if (test_bit(RTL8152_UNPLUG, &tp->flags))
-                goto out1;
-
         if (!mutex_trylock(&tp->control)) {
                 schedule_delayed_work(&tp->schedule, 0);
                 goto out1;