[PATCH 08/24] atomisp/imx: Fix locking bug on error path

[Alan Cox]

This was reported by Dan Carpenter. When we error with an IMX 227 we don't 
release
the lock and the sensor would then hang.

Signed-off-by: Alan Cox <a...@linux.intel.com>
---
 drivers/staging/media/atomisp/i2c/imx/imx.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/atomisp/i2c/imx/imx.c 
b/drivers/staging/media/atomisp/i2c/imx/imx.c
index a73f902..408a7b9 100644
--- a/drivers/staging/media/atomisp/i2c/imx/imx.c
+++ b/drivers/staging/media/atomisp/i2c/imx/imx.c
@@ -454,8 +454,10 @@ static int imx_set_exposure_gain(struct v4l2_subdev *sd, 
u16 coarse_itg,
 
        if (dev->sensor_id == IMX227_ID) {
                ret = imx_write_reg_array(client, imx_param_hold);
-               if (ret)
+               if (ret) {
+                       mutex_unlock(&dev->input_lock);
                        return ret;
+               }
        }
 
        /* For imx175, setting gain must be delayed by one */