[PATCH 066/141] V4L/DVB (3314): Fixed em28xx based system lockup

[mchehab@infradead.org]

From: Markus Rechberger <mrechberger@gmail.com>
Date: 1139302153 -0200

Fixed em28xx based system lockup, device needs to be initialized
before starting the isoc transfer otherwise the system will completly lock up.

Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 1726b2c..1c1557d 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -383,12 +383,14 @@ static int em28xx_v4l2_open(struct inode
 		em28xx_capture_start(dev, 1);
 		em28xx_resolution_set(dev);
 
+		/* device needs to be initialized before isoc transfer */
+		video_mux(dev, 0);
+
 		/* start the transfer */
 		errCode = em28xx_init_isoc(dev);
 		if (errCode)
 			goto err;
 
-		video_mux(dev, 0);
 	}
 
 	dev->users++;

-
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