[alsa-devel] [PATCH] ASoC: omap: Check regulator enable for DAC on Pandora

[Peter Ujfalusi]

On 03/02/2013 08:49 AM, Mark Brown wrote:
> This will probably never fail but it's better style.
> 
> Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
> ---
>  sound/soc/omap/omap3pandora.c |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/omap/omap3pandora.c b/sound/soc/omap/omap3pandora.c
> index 805512f..953483e 100644
> --- a/sound/soc/omap/omap3pandora.c
> +++ b/sound/soc/omap/omap3pandora.c
> @@ -85,7 +85,11 @@ static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w,
>  	 * VCC power on/off and /PD pin high/low
>  	 */
>  	if (SND_SOC_DAPM_EVENT_ON(event)) {
> -		regulator_enable(omap3pandora_dac_reg);
> +		ret = regulator_enable(omap3pandora_dac_reg);
> +		if (ret != 0) {

The rest of this machine driver uses "if (ret < 0)" or "if (ret)". I would use:
 +		if (ret) {

> +			dev_err(w->dapm.dev, "Failed to power DAC: %d\n", ret);
> +			return ret;
> +		}
>  		mdelay(1);
>  		gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
>  	} else {
> 

Otherwise:
Acked-by: Peter Ujfalusi <peter.ujfalusi at ti.com>