From 1a397696536e896e7d763c0c38f3ae3e588b5d52 Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Mon, 11 Oct 2010 15:39:04 +0200 Subject: [PATCH] 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 Acked-by: Helmut Schaa Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00usb.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c index 769c53451b21..89d77f55d76c 100644 --- a/drivers/net/wireless/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/rt2x00/rt2x00usb.c @@ -363,10 +363,12 @@ void rt2x00usb_watchdog(struct rt2x00_dev *rt2x00dev) 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); -- 2.20.1