[PATCH -next] iio: accel: bma400: Switch to use dev_err_probe() helper

[PATCH -next] iio: accel: bma400: Switch to use dev_err_probe() helper

[Yang Yingliang]

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/iio/accel/bma400_core.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c
index ad8fce3e08cd..e4de649b6701 100644
--- a/drivers/iio/accel/bma400_core.c
+++ b/drivers/iio/accel/bma400_core.c
@@ -886,14 +886,10 @@ static int bma400_init(struct bma400_data *data)
 	ret = devm_regulator_bulk_get(data->dev,
 				      ARRAY_SIZE(data->regulators),
 				      data->regulators);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(data->dev,
-				"Failed to get regulators: %d\n",
-				ret);
+	if (ret)
+		return dev_err_probe(data->dev, ret,
+				     "Failed to get regulators\n");
 
-		return ret;
-	}
 	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
 				    data->regulators);
 	if (ret) {
-- 
2.25.1

Re: [PATCH -next] iio: accel: bma400: Switch to use dev_err_probe() helper

[Jonathan Cameron]

On Tue, 27 Sep 2022 14:44:35 +0800
Yang Yingliang <yangyingliang@huawei.com> wrote:

> In the probe path, dev_err() can be replaced with dev_err_probe()
> which will check if error code is -EPROBE_DEFER and prints the
> error name. It also sets the defer probe reason which can be
> checked later through debugfs. It's more simple in error path.
> 
> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Similar patch already queued for 6.2 from Yuan Can

Thanks,

Jonathan

> ---
>  drivers/iio/accel/bma400_core.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c
> index ad8fce3e08cd..e4de649b6701 100644
> --- a/drivers/iio/accel/bma400_core.c
> +++ b/drivers/iio/accel/bma400_core.c
> @@ -886,14 +886,10 @@ static int bma400_init(struct bma400_data *data)
>  	ret = devm_regulator_bulk_get(data->dev,
>  				      ARRAY_SIZE(data->regulators),
>  				      data->regulators);
> -	if (ret) {
> -		if (ret != -EPROBE_DEFER)
> -			dev_err(data->dev,
> -				"Failed to get regulators: %d\n",
> -				ret);
> +	if (ret)
> +		return dev_err_probe(data->dev, ret,
> +				     "Failed to get regulators\n");
>  
> -		return ret;
> -	}
>  	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
>  				    data->regulators);
>  	if (ret) {