Re: [PATCH 5.10 036/530] iio:adc:ad7476: Fix remove handling

From: Pavel Machek
Date: Sat May 15 2021 - 15:52:36 EST


Hi!
>
> commit 6baee4bd63f5fdf1716f88e95c21a683e94fe30d upstream.
>
> This driver was in an odd half way state between devm based cleanup
> and manual cleanup (most of which was missing).
> I would guess something went wrong with a rebase or similar.
> Anyhow, this basically finishes the job as a precursor to improving
> the regulator handling.

I don't think this is correct:

> --- a/drivers/iio/adc/ad7476.c
> +++ b/drivers/iio/adc/ad7476.c
> @@ -316,25 +316,15 @@ static int ad7476_probe(struct spi_devic
> spi_message_init(&st->msg);
> spi_message_add_tail(&st->xfer, &st->msg);
>
> - ret = iio_triggered_buffer_setup(indio_dev, NULL,
> - &ad7476_trigger_handler, NULL);
> + ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
> + &ad7476_trigger_handler, NULL);
> if (ret)
> - goto error_disable_reg;
> + return ret;
>
> if (st->chip_info->reset)
> st->chip_info->reset(st);
>
> - ret = iio_device_register(indio_dev);
> - if (ret)
> - goto error_ring_unregister;
> - return 0;
> -
> -error_ring_unregister:
> - iio_triggered_buffer_cleanup(indio_dev);
> -error_disable_reg:
> - regulator_disable(st->reg);
> -

Regulator_disable is now removed, but we still use regulator_enable,
and we still need to keep it balanced.

> - return ret;
> + return devm_iio_device_register(&spi->dev, indio_dev);
> }

Best regards,
Pavel

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