From: Eric Miao <eric.miao@marvell.com>
Date: Tue, 21 Apr 2009 06:39:07 +0000 (+0800)
Subject: [ARM] pxa: fix issue of muxed GPIO irq_chip functions touching non-muxed GPIOs
X-Git-Tag: v2.6.30-rc5~51^2~4^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a8f6faebaf5b3f0f56b7c12a4f99d97c56938b37;p=pandora-kernel.git

[ARM] pxa: fix issue of muxed GPIO irq_chip functions touching non-muxed GPIOs

pxa_gpio_irq_type() and pxa_unmask_muxed_gpio() will touch non-muxed GPIOs
(0 and 1 on PXA2xx/PXA3xx) bits in GRERx and GFERx, which is incorrect.
Actually, only those bits should get updated if the corresponding bits are
set in c->irq_mask as well. Fix this by updating only those relevant bits.

Reported-and-tested-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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