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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2014-09-16 15:57:07 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-27 08:29:39 -0800 |
| commit | 129d51a91f17a60e58d2c4201925710431610275 (patch) | |
| tree | 638104118ac80287558ed8f4c7f245c2e0d6bfc3 | |
| parent | 8d5d2e131054a376d92e685b5946e23f853ffa07 (diff) | |
| download | lwn-129d51a91f17a60e58d2c4201925710431610275.tar.gz lwn-129d51a91f17a60e58d2c4201925710431610275.zip | |
smiapp: Take mutex during PLL update in sensor initialisation
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.ailus@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 b10aaeda2bb4..b49254e4ea0a 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; |