On 06/19/2018 01:38 AM, Karim Eshapa wrote:
> Backward cleanups for all resources allocated in probing
> in case of failure at any regestering or allocation step.
Hi,
Thanks for the patch.
Resources that are allocated with devm_ are freed automatically in case of
an error, so this patch should not be necessary.
>
> Signed-off-by: Karim Eshapa <karim.esh...@gmail.com>
> ---
> drivers/staging/iio/adc/ad7816.c | 22 +++++++++++++++++-----
> 1 file changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/staging/iio/adc/ad7816.c
> b/drivers/staging/iio/adc/ad7816.c
> index bf76a8620bdb..5ff14c830451 100644
> --- a/drivers/staging/iio/adc/ad7816.c
> +++ b/drivers/staging/iio/adc/ad7816.c
> @@ -373,7 +373,7 @@ static int ad7816_probe(struct spi_device *spi_dev)
> if (ret) {
> dev_err(&spi_dev->dev, "Fail to request rdwr gpio PIN %d.\n",
> chip->rdwr_pin);
> - return ret;
> + goto device_free;
> }
> gpio_direction_input(chip->rdwr_pin);
> ret = devm_gpio_request(&spi_dev->dev, chip->convert_pin,
> @@ -381,7 +381,7 @@ static int ad7816_probe(struct spi_device *spi_dev)
> if (ret) {
> dev_err(&spi_dev->dev, "Fail to request convert gpio PIN %d.\n",
> chip->convert_pin);
> - return ret;
> + goto free_rdwr_pin;
> }
> gpio_direction_input(chip->convert_pin);
> ret = devm_gpio_request(&spi_dev->dev, chip->busy_pin,
> @@ -389,7 +389,7 @@ static int ad7816_probe(struct spi_device *spi_dev)
> if (ret) {
> dev_err(&spi_dev->dev, "Fail to request busy gpio PIN %d.\n",
> chip->busy_pin);
> - return ret;
> + goto free_convert_pin;
> }
> gpio_direction_input(chip->busy_pin);
>
> @@ -407,17 +407,29 @@ static int ad7816_probe(struct spi_device *spi_dev)
> indio_dev->name,
> indio_dev);
> if (ret)
> - return ret;
> + goto free_busy_pin;
> }
>
> ret = devm_iio_device_register(&spi_dev->dev, indio_dev);
> if (ret)
> - return ret;
> + goto free_dev_irq;
>
> dev_info(&spi_dev->dev, "%s temperature sensor and ADC registered.\n",
> indio_dev->name);
>
> return 0;
> +free_dev_irq:
> + devm_free_irq(&spi_dev->dev, spi_dev->irq, indio_dev);
> +free_busy_pin:
> + devm_gpio_free(&spi_dev->dev, chip->busy_pin);
> +free_convert_pin:
> + devm_gpio_free(&spi_dev->dev, chip->convert_pin);
> +free_rdwr_pin:
> + devm_gpio_free(&spi_dev->dev, chip->rdwr_pin);
> +device_free:
> + devm_iio_device_free(&spi_dev->dev, indio_dev);
> +
> + return ret;
> }
>
> static const struct spi_device_id ad7816_id[] = {
>
