rt2x00: Don't perform watchdog checks on empty queue
The currently used watchdog functions cannot be applied
to empty queues.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 769c534..89d77f5 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -363,10 +363,12 @@
struct data_queue *queue;
tx_queue_for_each(rt2x00dev, queue) {
- if (rt2x00queue_dma_timeout(queue))
- rt2x00usb_watchdog_tx_dma(queue);
- if (rt2x00queue_timeout(queue))
- rt2x00usb_watchdog_tx_status(queue);
+ if (!rt2x00queue_empty(queue)) {
+ if (rt2x00queue_dma_timeout(queue))
+ rt2x00usb_watchdog_tx_dma(queue);
+ if (rt2x00queue_timeout(queue))
+ rt2x00usb_watchdog_tx_status(queue);
+ }
}
}
EXPORT_SYMBOL_GPL(rt2x00usb_watchdog);