ath9k_htc: Handle device unplug properly
When the USB device has been unplugged, there is
no point in trying to send commands to the target.
Fix this by denying all WMI commands in such a case.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c
index dc6c6fc..c688545 100644
--- a/drivers/net/wireless/ath/ath9k/wmi.c
+++ b/drivers/net/wireless/ath/ath9k/wmi.c
@@ -276,6 +276,9 @@
int time_left, ret = 0;
unsigned long flags;
+ if (wmi->drv_priv->op_flags & OP_UNPLUGGED)
+ return 0;
+
if (!wmi)
return -EINVAL;