Il 17/05/23 01:00, Shreeya Patel ha scritto:
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@xxxxxxxxxxxxx>
---
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
..snip..
@@ -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");
It's not your fault - and it's about a pre-existing issue, but there's that:
you're returning an error if devm_add_action_or_reset() fails (which is highly
unlikely), but you're leaving the regulator enabled!
As for how to proceed here, I would suggest to fix this issue in a separated
commit (before the dev_err_probe() conversion); it'd look like...
if (ret) {
regulator_disable(info->vref);
dev_err( .... blurb );
return ret;
}
and after the conversion it'd look like...
if (ret) {
regulator_disable(info->vref);
return dev_err_probe( ... blurb );
}
Cheers,
Angelo
ret = regulator_get_voltage(info->vref);
if (ret < 0)
