From: Ricardo Ribalda <ricardo.ribalda@gmail.com>
Date: Wed, 8 Jan 2014 08:01:33 +0000 (-0300)
Subject: [media] vb2: Check if there are buffers before streamon
X-Git-Tag: v3.14-rc2~14^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=548df7831adc34eca3ccefa29f768cef84315d6e;p=pandora-kernel.git

[media] vb2: Check if there are buffers before streamon

This patch adds a test preventing streamon() if there is no buffer
ready.

Without this patch, a user could call streamon() before
preparing any buffer. This leads to a situation where if he calls
close() before calling streamoff() the device is kept streaming.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---

Reading git-diff-tree failed