3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sakari Ailus <sakari.ai...@linux.intel.com>

commit f85698cd296f08218a7750f321e94607da128600 upstream.

The mutex does not serialise anything in this case but avoids a lockdep
warning from the control framework.

Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/media/i2c/smiapp/smiapp-core.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -2629,7 +2629,9 @@ static int smiapp_registered(struct v4l2
                pll->flags |= SMIAPP_PLL_FLAG_OP_PIX_CLOCK_PER_LANE;
        pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
 
+       mutex_lock(&sensor->mutex);
        rval = smiapp_update_mode(sensor);
+       mutex_unlock(&sensor->mutex);
        if (rval) {
                dev_err(&client->dev, "update mode failed\n");
                goto out_nvm_release;


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