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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2014-09-16 15:57:07 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-10-28 13:32:46 -0200 |
| commit | f85698cd296f08218a7750f321e94607da128600 (patch) | |
| tree | 73924ccf07d5f2e5354c4a2b44c0b3b0bdfd034b /drivers/media/i2c | |
| parent | d6d41ba1cb38d3e9575462b12f22b9f0b360bc1d (diff) | |
| download | lwn-f85698cd296f08218a7750f321e94607da128600.tar.gz lwn-f85698cd296f08218a7750f321e94607da128600.zip | |
[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>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/smiapp/smiapp-core.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |