From: Marek Vašut <marek.vasut@gmail.com>
Date: Wed, 26 May 2010 22:53:09 +0000 (+0100)
Subject: ARM: 6146/1: sa1111: Prevent deadlock in resume path
X-Git-Tag: v2.6.35-rc3~14^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3defb2476166445982a90c12d33f8947e75476c4;p=pandora-kernel.git

ARM: 6146/1: sa1111: Prevent deadlock in resume path

This patch reorganises the sa1111_resume() function in a manner the spinlock
happens after calling the sa1111_wake(). This fixes two bugs:

1) This function called sa1111_wake() which tried to claim the same spinlock
   the sa1111_resume() already claimed. This would result in certain deadlock.

   Original idea for this part: Russell King <rmk+kernel@arm.linux.org.uk>

2) The function didn't unlock the spinlock in case the chip didn't report
   correct ID.

   Original idea for this part: Julia Lawall <julia@diku.dk>

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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