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[media] smiapp: Take mutex during PLL update in sensor initialisation 

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

Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sakari Ailus 2014-09-16 15:57:07 -03:00 committed by Mauro Carvalho Chehab
parent d6d41ba1cb
commit f85698cd29
1 changed files with 2 additions and 0 deletions
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2
drivers/media/i2c/smiapp/smiapp-core.c
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@ -2677,7 +2677,9 @@ static int smiapp_registered(struct v4l2_subdev *subdev)
pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
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;