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ath9k: fix false positives in the baseband hang check

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ath9k_hw_check_alive() occasionally returns false, as the hardware
is still processing data in a specific state. Fix this issue by
repeating the test a few times with longer delay inbetween attempts.
This gets rid of excessive hardware resets that appear frequently on
some AR9132 based devices, but could also happen on AR9280.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reported-by: Björn Smedman <bjorn.smedman@venatech.se>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
2010-07-02 00:09:52 +02:00
committed by John W. Linville
parent 54bd5006b0
commit 347809fc2c
3 changed files with 28 additions and 2 deletions
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drivers/net/wireless/ath/ath9k/init.c
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@@ -718,6 +718,7 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
goto error_world;
}
INIT_WORK(&sc->hw_check_work, ath_hw_check);
INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
INIT_WORK(&sc->chan_work, ath9k_wiphy_chan_work);
INIT_DELAYED_WORK(&sc->wiphy_work, ath9k_wiphy_work);