[PATCH 5/7] iio: adc: rockchip_saradc: Use dev_err_probe

Shreeya Patel
2023-05-16T23:03:57Z

Use dev_err_probe instead of dev_err in probe function,
which simplifies code a little bit and prints the error
code.

Signed-off-by: Shreeya Patel <shreeya.patel@collabora.com>
---
drivers/iio/adc/rockchip_saradc.c | 45 ++++++++++++++-----------------
1 file changed, 20 insertions(+), 25 deletions(-)

diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 5e1e8575bc76..a52021fd477d 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -418,25 +418,23 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
return -ENODEV;

indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));
- if (!indio_dev) {
- dev_err(&pdev->dev, "failed allocating iio device\n");
- return -ENOMEM;
- }
+ if (!indio_dev)
+ return dev_err_probe(&pdev->dev, -ENOMEM,
+ "failed allocating iio device\n");
+
info = iio_priv(indio_dev);

match_data = of_device_get_match_data(&pdev->dev);
- if (!match_data) {
- dev_err(&pdev->dev, "failed to match device\n");
- return -ENODEV;
- }
+ if (!match_data)
+ return dev_err_probe(&pdev->dev, -ENODEV,
+ "failed to match device\n");

info->data = match_data;

/* Sanity check for possible later IP variants with more channels */
- if (info->data->num_channels > SARADC_MAX_CHANNELS) {
- dev_err(&pdev->dev, "max channels exceeded");
- return -EINVAL;
- }
+ if (info->data->num_channels > SARADC_MAX_CHANNELS)
+ return dev_err_probe(&pdev->dev, -EINVAL,
+ "max channels exceeded");

info->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(info->regs))
@@ -494,23 +492,20 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
* This may become user-configurable in the future.
*/
ret = clk_set_rate(info->clk, info->data->clk_rate);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to set adc clk rate, %d\n", ret);
- return ret;
- }
+ if (ret < 0)
+ return dev_err_probe(&pdev->dev, ret,
+ "failed to set adc clk rate\n");

ret = regulator_enable(info->vref);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to enable vref regulator\n");
- return ret;
- }
+ if (ret < 0)
+ return dev_err_probe(&pdev->dev, ret,
+ "failed to enable vref regulator\n");
+
ret = devm_add_action_or_reset(&pdev->dev,
rockchip_saradc_regulator_disable, info);
- if (ret) {
- dev_err(&pdev->dev, "failed to register devm action, %d\n",
- ret);
- return ret;
- }
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret,
+ "failed to register devm action\n");

ret = regulator_get_voltage(info->vref);
if (ret < 0)
--
2.30.2