From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 4 Feb 2009 20:09:38 +0000 (+0100)
Subject: mfd: Improve diagnostics for WM8350 ID register probe
X-Git-Tag: v2.6.29-rc6~85^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85c93ea7dca475a6ee3bf414befe94b2c42f1001;p=pandora-kernel.git

mfd: Improve diagnostics for WM8350 ID register probe

Check the return value of the device I/O functions when reading the
ID registers so we can provide a more useful diagnostic when we're
having trouble talking to the device.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
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