Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.14 088/169] ASoC: DAPM: Fix missing kctl change notifications | Date | Mon, 25 Oct 2021 21:14:29 +0200 |
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From: Takashi Iwai <tiwai@suse.de>
commit 5af82c81b2c49cfb1cad84d9eb6eab0e3d1c4842 upstream.
The put callback of a kcontrol is supposed to return 1 when the value is changed, and this will be notified to user-space. However, some DAPM kcontrols always return 0 (except for errors), hence the user-space misses the update of a control value.
This patch corrects the behavior by properly returning 1 when the value gets updated.
Reported-and-tested-by: Hans de Goede <hdegoede@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20211006141712.2439-1-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- sound/soc/soc-dapm.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
--- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2559,6 +2559,7 @@ static int snd_soc_dapm_set_pin(struct s const char *pin, int status) { struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true); + int ret = 0; dapm_assert_locked(dapm); @@ -2571,13 +2572,14 @@ static int snd_soc_dapm_set_pin(struct s dapm_mark_dirty(w, "pin configuration"); dapm_widget_invalidate_input_paths(w); dapm_widget_invalidate_output_paths(w); + ret = 1; } w->connected = status; if (status == 0) w->force = 0; - return 0; + return ret; } /** @@ -3582,14 +3584,15 @@ int snd_soc_dapm_put_pin_switch(struct s { struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); const char *pin = (const char *)kcontrol->private_value; + int ret; if (ucontrol->value.integer.value[0]) - snd_soc_dapm_enable_pin(&card->dapm, pin); + ret = snd_soc_dapm_enable_pin(&card->dapm, pin); else - snd_soc_dapm_disable_pin(&card->dapm, pin); + ret = snd_soc_dapm_disable_pin(&card->dapm, pin); snd_soc_dapm_sync(&card->dapm); - return 0; + return ret; } EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); @@ -4023,7 +4026,7 @@ static int snd_soc_dapm_dai_link_put(str rtd->params_select = ucontrol->value.enumerated.item[0]; - return 0; + return 1; } static void
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