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(parent: d63ffc4) | patch
ath9k_hw: check if the chip failed to wake up
authorFelix Fietkau <nbd@nbd.name>
Thu, 2 Feb 2017 09:14:51 +0000 (10:14 +0100)
committerKalle Valo <kvalo@qca.qualcomm.com>
Tue, 7 Feb 2017 09:00:21 +0000 (11:00 +0200)
commita34d0a0da1abae46a5f6ebd06fb0ec484ca099d9
treecebb096769375fe372b13545da083d4cb6c97100tree | snapshot (tar.gz zip)
parentd63ffc45c5d3df15f6fc8c73079458ce4a111995commit | diff
ath9k_hw: check if the chip failed to wake up

In an RFC patch, Sven Eckelmann and Simon Wunderlich reported:

"QCA 802.11n chips (especially AR9330/AR9340) sometimes end up in a
state in which a read of AR_CFG always returns 0xdeadbeef.
This should not happen when when the power_mode of the device is
ATH9K_PM_AWAKE."

Include the check for the default register state in the existing MAC
hang check.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
drivers/net/wireless/ath/ath9k/hw.c diff | blob | blame | history