This is a note to let you know that I've just added the patch titled
ASoC: soc-dapm: Add helper for comparing widget name
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-soc-dapm-add-helper-for-comparing-widget-name.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a301b1d65da72d622a01add8b7faea81d6e7d75a
Author: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Date: Tue Oct 3 17:57:09 2023 +0200
ASoC: soc-dapm: Add helper for comparing widget name
[ Upstream commit 76aca10ccb7c23a7b7a0d56e0bfde2c8cdddfe24 ]
Some drivers use one event callback for multiple widgets but still need
to perform a bit different actions based on actual widget. This is done
by comparing widget name, however drivers tend to miss possible name
prefix. Add a helper to solve common mistakes.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231003155710.821315-2-krzysztof.kozlowski@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 87f8e1793af15..295d63437e4d8 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -423,6 +423,7 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card);
int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai);
+int snd_soc_dapm_widget_name_cmp(struct snd_soc_dapm_widget *widget, const char *s);
/* dapm path setup */
int snd_soc_dapm_new_widgets(struct snd_soc_card *card);
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index 4356cc320fea0..10b5fe5a3af85 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -242,6 +242,7 @@ int snd_soc_component_notify_control(struct snd_soc_component *component,
char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
struct snd_kcontrol *kctl;
+ /* When updating, change also snd_soc_dapm_widget_name_cmp() */
if (component->name_prefix)
snprintf(name, ARRAY_SIZE(name), "%s %s", component->name_prefix, ctl);
else
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 3091e8160bad7..5fd32185fe63d 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2726,6 +2726,18 @@ int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
}
EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
+int snd_soc_dapm_widget_name_cmp(struct snd_soc_dapm_widget *widget, const char *s)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(widget->dapm);
+ const char *wname = widget->name;
+
+ if (component->name_prefix)
+ wname += strlen(component->name_prefix) + 1; /* plus space */
+
+ return strcmp(wname, s);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_widget_name_cmp);
+
/*
* dapm_update_widget_flags() - Re-compute widget sink and source flags
* @w: The widget for which to update the flags
