ath5k: fix locking in tx_complete_poll_work
ath5k_reset must be called with sc->lock. Since the tx queue watchdog runs in a workqueue and accesses sc, it's appropriate to just take the lock over the whole function. Signed-off-by: NBob Copeland <me@bobcopeland.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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