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rt2x00: Don't perform watchdog checks on empty queue

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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>
This commit is contained in:
Ivo van Doorn 2010-10-11 15:39:04 +02:00 committed by John W. Linville
parent a1d1eabc8c
commit 1a39769653
1 changed files with 6 additions and 4 deletions
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10
drivers/net/wireless/rt2x00/rt2x00usb.c
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@ -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);