From 8a26a258bdb82db241cdc35f332f88dd67bdb9c9 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Date: Mon, 23 Feb 2015 09:41:17 -0300
Subject: [PATCH] [media] dvb core: only start media entity if not NULL

The logic there tries to start the media entity even if it
doesn't exist, causing this bug:

	[  314.356162] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
	[  314.356202] IP: [<ffffffffa02ef74c>] media_entity_pipeline_start+0x1c/0x390 [media]

Reported-by: Gert-Jan van der Stroom <gjstroom@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Reading git-format-patch failed