From: Pavel Roskin <proski@gnu.org>
Date: Tue, 23 Feb 2010 23:15:27 +0000 (-0500)
Subject: ath9k: never read from the AR_IMR_S2 register
X-Git-Tag: v2.6.35-rc1~473^2~714^2~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74bad5cb497080514c4a945f38589bdb574fdfb7;p=pandora-kernel.git

ath9k: never read from the AR_IMR_S2 register

The AR_IMR_S2 register sometimes cannot be read correctly.  Instead of a
valid value, 0xdeadbeef is returned.  The driver has been observed
writing that value back to AR_IMR_S2 after changing a few bits.

Cache the register value in ah->imrs2_reg and always write chached value
to the register.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

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