From: Guennadi Liakhovetski Date: Tue, 12 Mar 2013 11:40:37 +0000 (-0300) Subject: [media] mt9m111: fix Oops - initialise context before dereferencing X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4a1313c447ffb67125802d20653959ac46b0b4ef;p=deliverable%2Flinux.git [media] mt9m111: fix Oops - initialise context before dereferencing A recent commit "[media] soc-camera: Push probe-time power management to drivers" causes an Oops during mt9m111 driver probing because its .ctx private data field is now dereferenced before it is initialised. Fix this by initialising the field earlier. Reported-by: Javier Martin Signed-off-by: Guennadi Liakhovetski Tested-by: Javier Martin Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/i2c/soc_camera/mt9m111.c b/drivers/media/i2c/soc_camera/mt9m111.c index 0b0ebaa68602..2902ba633da6 100644 --- a/drivers/media/i2c/soc_camera/mt9m111.c +++ b/drivers/media/i2c/soc_camera/mt9m111.c @@ -785,8 +785,6 @@ static int mt9m111_init(struct mt9m111 *mt9m111) struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); int ret; - /* Default HIGHPOWER context */ - mt9m111->ctx = &context_b; ret = mt9m111_enable(mt9m111); if (!ret) ret = mt9m111_reset(mt9m111); @@ -975,6 +973,9 @@ static int mt9m111_probe(struct i2c_client *client, if (!mt9m111) return -ENOMEM; + /* Default HIGHPOWER context */ + mt9m111->ctx = &context_b; + v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops); v4l2_ctrl_handler_init(&mt9m111->hdl, 5); v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,