tree 3273b3cfdd9d45d63448fbbde1a4df08201ae700
parent 3cc25e510dfc36dc62ee0aa87344b36ed7c1742a
author Felix Fietkau <nbd@openwrt.org> 1288744611 +0100
committer John W. Linville <linville@tuxdriver.com> 1289253227 -0500

ath9k: check old power mode before clearing cycle counters

ath9k_ps_wakeup() clears the cycle counters after waking up the
hardware using ath9k_hw_setpower, however if power save is disabled,
then the counters will contain useful data, which then gets discarded.
Fix this by checking the old power mode before discarding any data.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>