media: i2c: imx219: simplify getting state container

The pointer to 'struct v4l2_subdev' is stored in drvdata via
v4l2_i2c_subdev_init() so there is no point of a dance like:

    struct i2c_client *client = to_i2c_client(struct device *dev)
    struct v4l2_subdev *sd = i2c_get_clientdata(client);

This allows to remove local variable 'client' and few pointer
dereferences.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index 1cee45e..d5349d1 100644 (file)
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -1114,22 +1114,21 @@ err_unlock:
 /* Power/clock management functions */
 static int imx219_power_on(struct device *dev)
 {
-       struct i2c_client *client = to_i2c_client(dev);
-       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct imx219 *imx219 = to_imx219(sd);
        int ret;
 
        ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES,
                                    imx219->supplies);
        if (ret) {
-               dev_err(&client->dev, "%s: failed to enable regulators\n",
+               dev_err(dev, "%s: failed to enable regulators\n",
                        __func__);
                return ret;
        }
 
        ret = clk_prepare_enable(imx219->xclk);
        if (ret) {
-               dev_err(&client->dev, "%s: failed to enable clock\n",
+               dev_err(dev, "%s: failed to enable clock\n",
                        __func__);
                goto reg_off;
        }
@@ -1148,8 +1147,7 @@ reg_off:
 
 static int imx219_power_off(struct device *dev)
 {
-       struct i2c_client *client = to_i2c_client(dev);
-       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct imx219 *imx219 = to_imx219(sd);
 
        gpiod_set_value_cansleep(imx219->reset_gpio, 0);
@@ -1161,8 +1159,7 @@ static int imx219_power_off(struct device *dev)
 
 static int __maybe_unused imx219_suspend(struct device *dev)
 {
-       struct i2c_client *client = to_i2c_client(dev);
-       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct imx219 *imx219 = to_imx219(sd);
 
        if (imx219->streaming)
@@ -1173,8 +1170,7 @@ static int __maybe_unused imx219_suspend(struct device *dev)
 
 static int __maybe_unused imx219_resume(struct device *dev)
 {
-       struct i2c_client *client = to_i2c_client(dev);
-       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct imx219 *imx219 = to_imx219(sd);
        int ret;