On Tue, 28 Sep 2021 22:19:47 +0800
Cai Huoqing <caihuoqing@xxxxxxxxx> wrote:
> When possible use dev_err_probe help to properly deal with the
> PROBE_DEFER error, the benefit is that DEFER issue will be logged
> in the devices_deferred debugfs file.
> Using dev_err_probe() can reduce code size, and the error value
> gets printed.
>
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Signed-off-by: Cai Huoqing <caihuoqing@xxxxxxxxx>
I believe we could in theory get an -EPROBE_DEFER from
platform_get_irq_by_name() so we should handle that one similarly.
I have no idea if can actually happen on this platform, but seems to me
that we should be thorough given how easy it is to do here.
Thanks,
Jonathan
> ---
> v1->v2: Remove the separate line of PTR_ERR().
>
> drivers/iio/adc/ab8500-gpadc.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
> index 7b5212ba5501..c58d0e2ae538 100644
> --- a/drivers/iio/adc/ab8500-gpadc.c
> +++ b/drivers/iio/adc/ab8500-gpadc.c
> @@ -1146,11 +1146,9 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
>
> /* The VTVout LDO used to power the AB8500 GPADC */
> gpadc->vddadc = devm_regulator_get(dev, "vddadc");
> - if (IS_ERR(gpadc->vddadc)) {
> - ret = PTR_ERR(gpadc->vddadc);
> - dev_err(dev, "failed to get vddadc\n");
> - return ret;
> - }
> + if (IS_ERR(gpadc->vddadc))
> + return dev_err_probe(dev, PTR_ERR(gpadc->vddadc),
> + "failed to get vddadc\n");
>
> ret = regulator_enable(gpadc->vddadc);
> if (ret) {
