From: Gertjan van Wingerde <gwingerde@gmail.com>
Date: Sat, 14 Nov 2009 19:20:36 +0000 (+0100)
Subject: rt2x00: Fix BUG on rt2800usb when trying to read eFuse EEPROM.
X-Git-Tag: v2.6.33-rc1~388^2~280^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31a4cf1f22677ba1ea90be055bc20aac25b8e7c4;p=pandora-kernel.git

rt2x00: Fix BUG on rt2800usb when trying to read eFuse EEPROM.

Current tree hits a BUG_ON in rt2x00_regbusy_read, because the eFuse EEPROM
reading code of rt2800lib uses the function without the csr_mutex locked.

Fix this by locking the csr_mutex for the of the EEPROM reading cycly and
using the _lock variants of the register reading and writing functions.

This also introcudes the register_read_lock function pointer in the
rt2800_ops structure.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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