From: Sakari Ailus <sakari.ailus@iki.fi>
Date: Sun, 13 Oct 2013 11:00:26 +0000 (-0300)
Subject: [media] media: Check for active links on pads with MEDIA_PAD_FL_MUST_CONNECT flag
X-Git-Tag: v3.14-rc1~20^2~387
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de49c285a3604955dcbf746edd871f2a4f128122;p=pandora-kernel.git

[media] media: Check for active links on pads with MEDIA_PAD_FL_MUST_CONNECT flag

Do not allow streaming if a pad with MEDIA_PAD_FL_MUST_CONNECT flag is not
connected by an active link.
This patch makes it possible to avoid drivers having to check for the most
common case of link state validation: a sink pad that must be connected.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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