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authorJanusz Krzysztofik <jmkrzyszt@gmail.com>2019-03-29 21:06:09 -0400
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-04-22 11:33:03 -0400
commitccdd85d518d8b9320ace1d87271f0ba2175f21fa (patch)
treeb39aa15e485a11792b8e61c0b59130c44dfa6e1a /drivers/media/i2c
parent933c1320847f5ed6b61a7d10f0a948aa98ccd7b0 (diff)
media: ov6650: Move v4l2_clk_get() to ov6650_video_probe() helper
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>
Diffstat (limited to 'drivers/media/i2c')
-rw-r--r--drivers/media/i2c/ov6650.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index f9359b11fa5c..de7d9790f054 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -810,9 +810,16 @@ 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);
@@ -849,6 +856,11 @@ 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;
}
@@ -991,18 +1003,9 @@ 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;
}