From: Mathias Nyman <mathias.nyman@linux.intel.com>
Date: Fri, 8 Jul 2011 09:02:18 +0000 (+0100)
Subject: gpio/langwell_gpio: ack the correct bit for langwell gpio interrupts
X-Git-Tag: v3.0-rc7~29^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2345b20fd9160d99f7cdf34e7b028ea351bf9c25;p=pandora-kernel.git

gpio/langwell_gpio: ack the correct bit for langwell gpio interrupts

The wrong bit was masked when acking langwell gpio interrupts.

Reason for maskig the wrong bit was probably because__ffs() and ffs() functions
return bit indexes differently (0..31 vs 1..32)

This fixes langwell based devices from hanging when a gpio interrupt is
triggered and undoes the breakage which occurred in change set
732063b92bb727b27e61580ce278dddefe31c6ad

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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