Le 18/03/2022 à 10:35, Meng Tang a écrit :
> Today, hp_jack_event and mic_jack_event always return 0. However,
> snd_soc_dapm_disable_pin and snd_soc_dapm_enable_pin may return a
> non-zero value, this will cause the user who calling hp_jack_event
> and mic_jack_event don't know whether the operation was really
> successfully.
>
> This patch corrects the behavior by properly returning 1 when the
> value gets updated.
>
> Signed-off-by: Meng Tang <tangmeng@xxxxxxxxxxxxx>
> ---
> sound/soc/fsl/fsl-asoc-card.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
> index 370bc790c6ba..f2641c2cb047 100644
> --- a/sound/soc/fsl/fsl-asoc-card.c
> +++ b/sound/soc/fsl/fsl-asoc-card.c
> @@ -457,16 +457,18 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
> static int hp_jack_event(struct notifier_block *nb, unsigned long event,
> void *data)
> {
> + int ret;
> +
You don't need that new local var. There are coccinelle scripts that
track those unnecessary intermediates so don't add a new one.
> struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
> struct snd_soc_dapm_context *dapm = &jack->card->dapm;
>
> if (event & SND_JACK_HEADPHONE)
> /* Disable speaker if headphone is plugged in */
> - snd_soc_dapm_disable_pin(dapm, "Ext Spk");
> + ret = snd_soc_dapm_disable_pin(dapm, "Ext Spk");
Should be
return snd_soc_dapm_disable_pin(dapm, "Ext Spk");
> else
> - snd_soc_dapm_enable_pin(dapm, "Ext Spk");
> + ret = snd_soc_dapm_enable_pin(dapm, "Ext Spk");
and
return snd_soc_dapm_enable_pin(dapm, "Ext Spk");
>
> - return 0;
> + return ret;
And completely drop that.
> }
>
> static struct notifier_block hp_jack_nb = {
> @@ -476,16 +478,18 @@ static struct notifier_block hp_jack_nb = {
> static int mic_jack_event(struct notifier_block *nb, unsigned long event,
> void *data)
> {
> + int ret;
> +
And do exactly the same here.
> struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
> struct snd_soc_dapm_context *dapm = &jack->card->dapm;
>
> if (event & SND_JACK_MICROPHONE)
> /* Disable dmic if microphone is plugged in */
> - snd_soc_dapm_disable_pin(dapm, "DMIC");
> + ret = snd_soc_dapm_disable_pin(dapm, "DMIC");
> else
> - snd_soc_dapm_enable_pin(dapm, "DMIC");
> + ret = snd_soc_dapm_enable_pin(dapm, "DMIC");
>
> - return 0;
> + return ret;
> }
>
> static struct notifier_block mic_jack_nb = {
