diff options
| author | Janusz Krzysztofik <jmkrzyszt@gmail.com> | 2019-03-29 21:06:09 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-31 06:46:17 -0700 |
| commit | 3ccd89123b67865dda047a7586d31759bc0e17af (patch) | |
| tree | f00dbba10a83a498273647129de96f9c7b24351c /drivers/media/i2c | |
| parent | 81a0b6ff0209a6daa2f1d98033511dd618847508 (diff) | |
| download | linux-stable-3ccd89123b67865dda047a7586d31759bc0e17af.tar.gz linux-stable-3ccd89123b67865dda047a7586d31759bc0e17af.tar.bz2 linux-stable-3ccd89123b67865dda047a7586d31759bc0e17af.zip | |
media: ov6650: Move v4l2_clk_get() to ov6650_video_probe() helper
[ Upstream commit ccdd85d518d8b9320ace1d87271f0ba2175f21fa ]
In preparation for adding asynchronous subdevice support to the driver,
don't acquire v4l2_clk from the driver .probe() callback as that may
fail if the clock is provided by a bridge driver which may be not yet
initialized. Move the v4l2_clk_get() to ov6650_video_probe() helper
which is going to be converted to v4l2_subdev_internal_ops.registered()
callback, executed only when the bridge driver is ready.
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/ov6650.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c index a9264d515e54..edded869d792 100644 --- a/drivers/media/i2c/ov6650.c +++ b/drivers/media/i2c/ov6650.c @@ -811,9 +811,16 @@ static int ov6650_video_probe(struct i2c_client *client) u8 pidh, pidl, midh, midl; int ret; + priv->clk = v4l2_clk_get(&client->dev, NULL); + if (IS_ERR(priv->clk)) { + ret = PTR_ERR(priv->clk); + dev_err(&client->dev, "v4l2_clk request err: %d\n", ret); + return ret; + } + ret = ov6650_s_power(&priv->subdev, 1); if (ret < 0) - return ret; + goto eclkput; msleep(20); @@ -850,6 +857,11 @@ static int ov6650_video_probe(struct i2c_client *client) done: ov6650_s_power(&priv->subdev, 0); + if (!ret) + return 0; +eclkput: + v4l2_clk_put(priv->clk); + return ret; } @@ -992,18 +1004,9 @@ static int ov6650_probe(struct i2c_client *client, priv->code = MEDIA_BUS_FMT_YUYV8_2X8; priv->colorspace = V4L2_COLORSPACE_JPEG; - priv->clk = v4l2_clk_get(&client->dev, NULL); - if (IS_ERR(priv->clk)) { - ret = PTR_ERR(priv->clk); - goto eclkget; - } - ret = ov6650_video_probe(client); - if (ret) { - v4l2_clk_put(priv->clk); -eclkget: + if (ret) v4l2_ctrl_handler_free(&priv->hdl); - } return ret; } |