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ASoC: dapm: avoid container_of() to get component

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The current implementation does not work for widgets of DAPMs without
component, as snd_soc_dapm_to_component() requires it. If the widget is
directly owned by the card, e.g. as it is the case for the tegra
implementation, the call leads to UB. Therefore directly access the
component of the widget's DAPM to be able to check if a component is
available.

Fixes: f82eb06a40 ("ASoC: tegra: machine: Handle component name prefix")
Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Link: https://patch.msgid.link/20241008-tegra-dapm-v2-1-5e999cb5f0e7@skidata.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Benjamin Bara 2024-10-08 13:36:14 +02:00 committed by Mark Brown
parent 9814c1447f
commit 3fe9f5882c
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1 changed files with 2 additions and 2 deletions
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sound/soc/soc-dapm.c
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@ -2785,10 +2785,10 @@ 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);
struct snd_soc_component *component = widget->dapm->component;
const char *wname = widget->name;
if (component->name_prefix)
if (component && component->name_prefix)
wname += strlen(component->name_prefix) + 1; /* plus space */
return strcmp(wname, s);