From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Mon, 25 Mar 2013 12:55:59 +0000 (-0300)
Subject: [media] tuner-core: handle errors when getting signal strength/afc
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~81^2~177
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=004e45d736bfe62159bd4dc1549eff414bd27496;p=pandora-kernel.git

[media] tuner-core: handle errors when getting signal strength/afc

If those callbacks fail, it should return zero, and not a random
value. The previous code assumed that all drivers would only change
signal strength if it succeeds, but this may not be true.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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