From 3c437901bd83d236e4349d93bf5d3d814b8f6357 Mon Sep 17 00:00:00 2001
From: Michael Grzeschik <m.grzeschik@pengutronix.de>
Date: Tue, 27 Nov 2018 05:02:49 -0500
Subject: media: mt9m111: add streaming check to set_fmt

Currently set_fmt don't care about the streaming status, so the format
can be changed during streaming. This can lead into wrong behaviours.

Check if the device is already streaming and return -EBUSY to avoid
wrong behaviours.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
 drivers/media/i2c/mt9m111.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers')

diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
index 03559669de9f..9b0a3689fa98 100644
--- a/drivers/media/i2c/mt9m111.c
+++ b/drivers/media/i2c/mt9m111.c
@@ -563,6 +563,9 @@ static int mt9m111_set_fmt(struct v4l2_subdev *sd,
 	bool bayer;
 	int ret;
 
+	if (mt9m111->is_streaming)
+		return -EBUSY;
+
 	if (format->pad)
 		return -EINVAL;
 
-- 
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