Re: [PATCH 02/14] iio: adc: sc27xx: Replace devm_add_action() followed by failure action with devm_add_action_or_reset()

[Jonathan Cameron]

On Mon,  8 Jul 2019 20:32:43 +0800
Fuqian Huang <huangfq.dax...@gmail.com> wrote:

> devm_add_action_or_reset() is introduced as a helper function which 
> internally calls devm_add_action(). If devm_add_action() fails 
> then it will execute the action mentioned and return the error code.
> This reduce source code size (avoid writing the action twice) 
> and reduce the likelyhood of bugs.
> 
> Signed-off-by: Fuqian Huang <huangfq.dax...@gmail.com>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/sc27xx_adc.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
> index ec86f640e963..d7ca002cbb17 100644
> --- a/drivers/iio/adc/sc27xx_adc.c
> +++ b/drivers/iio/adc/sc27xx_adc.c
> @@ -546,10 +546,9 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
>               return -ENXIO;
>       }
>  
> -     ret = devm_add_action(dev, sc27xx_adc_free_hwlock,
> +     ret = devm_add_action_or_reset(dev, sc27xx_adc_free_hwlock,
>                             sc27xx_data->hwlock);
>       if (ret) {
> -             sc27xx_adc_free_hwlock(sc27xx_data->hwlock);
>               dev_err(dev, "failed to add hwspinlock action\n");
>               return ret;
>       }
> @@ -563,9 +562,8 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
>               return ret;
>       }
>  
> -     ret = devm_add_action(dev, sc27xx_adc_disable, sc27xx_data);
> +     ret = devm_add_action_or_reset(dev, sc27xx_adc_disable, sc27xx_data);
>       if (ret) {
> -             sc27xx_adc_disable(sc27xx_data);
>               dev_err(dev, "failed to add ADC disable action\n");
>               return ret;
>       }