From: Axel Lin <axel.lin@gmail.com>
Date: Mon, 23 May 2011 12:08:10 +0000 (+0800)
Subject: regulator: Fix _regulator_get_voltage if get_voltage callback is NULL
X-Git-Tag: v3.0-rc1~48^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb220d16f91f8d5fa1450c7af17e028e8cb3f0f1;p=pandora-kernel.git

regulator: Fix _regulator_get_voltage if get_voltage callback is NULL

In the case of get_voltage callback is NULL, current implementation in
_regulator_get_voltage will return -EINVAL.

Also returns proper error if ret is negative value.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
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