ath9k: fix race with IEEE80211_CONF_PS checks

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There is a small window where the mac80211 changes the IEEE80211_CONF_PS
flag, and then informs the driver about the change. We have a race
condition if we are checking the flag in the same time. Avoid it by
introducing a local variable, and using that instead of checking the
IEEE80211_CONF_PS flag directly.

This fix the problem reported by Luis:
http://article.gmane.org/gmane.linux.kernel.wireless.general/34363

Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

...

This commit is contained in:

Gabor Juhos 2009-07-24 17:27:21 +02:00 • committed by John W. Linville

parent ff8365ca88

commit 96148326c4

4 changed files with 12 additions and 15 deletions

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1

drivers/net/wireless/ath/ath9k/ath9k.h

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17

drivers/net/wireless/ath/ath9k/hw.c

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1

drivers/net/wireless/ath/ath9k/hw.h

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drivers/net/wireless/ath/ath9k/main.c

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