From: Sakari Ailus Date: Tue, 16 Sep 2014 18:57:07 +0000 (-0300) Subject: [media] smiapp: Take mutex during PLL update in sensor initialisation X-Git-Tag: firefly_0821_release~176^2~2474^2~410 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f85698cd296f08218a7750f321e94607da128600;p=firefly-linux-kernel-4.4.55.git [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 Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 932ed9be9ff3..6174a592adcc 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -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;