From: Andres Salomon <dilinger@queued.net>
Date: Tue, 21 Dec 2010 21:04:42 +0000 (-0800)
Subject: cs5535-gpio: don't apply errata #36 to edge detect GPIOs
X-Git-Tag: v2.6.37-rc8~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=001851659354cce436b749a793f3512a53394d80;p=pandora-kernel.git

cs5535-gpio: don't apply errata #36 to edge detect GPIOs

The edge detect status GPIOs function differently from the other atomic
model CS5536 GPIO registers; writing 1 to the high bits clears the GPIO,
but writing 1 to the lower bits also clears the bit.

This means that read-modify-write doesn't actually work for it, so don't
apply the errata here.  If a negative edge status gets lost after
resume..  well, we tried our best!

Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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