From: Ian Molton <ian.molton@codethink.co.uk>
Date: Mon, 26 Jan 2015 17:08:39 +0000 (-0300)
Subject: [media] rcar_vin: helper function for streaming stop
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~131^2~120
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4abec46833c923c1be8dfee1d4eb1fff12cceb21;p=pandora-kernel.git

[media] rcar_vin: helper function for streaming stop

The code that tests that capture from a stream has stopped is
presently insufficient and the potential for a race condition
exists where frame capture may generate an interrupt between
requesting the capture process halt and freeing buffers.

This patch refactors code out of rcar_vin_videobuf_release() and
into rcar_vin_wait_stop_streaming(), and ensures there are calls
in places where we need to know that capturing has finished.

Signed-off-by: Ian Molton <ian.molton@codethink.co.uk>
Signed-off-by: William Towle <william.towle@codethink.co.uk>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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