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ASoC: codecs: pcm512x: fix null-ptr dereference in pcm512x_overclock_xxx_put()

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In the pcm512x chipset driver, pcm512x_overclock_xxx_put() is defined as
a general mixer kcontrol instead of a DAPM kcontrol, so struct
snd_soc_dapm_context must not be accessed via
snd_soc_dapm_kcontrol_to_dapm().

This causes a NULL pointer dereference, so it must be modified to use
snd_soc_component_to_dapm().

Cc: stable@kernel.org
Closes: https://github.com/raspberrypi/linux/issues/7242
Fixes: 02dbbb7e98 ("ASoC: codecs: pcm512x: convert to snd_soc_dapm_xxx()")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Link: https://patch.msgid.link/20260521113712.227438-1-aha310510@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jeongjun Park 2026-05-21 20:37:12 +09:00 committed by Mark Brown
parent 45cf24da0a
commit 09e8f9a9aa
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 3 deletions
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6
sound/soc/codecs/pcm512x.c
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@ -235,7 +235,7 @@ static int pcm512x_overclock_pll_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
switch (snd_soc_dapm_get_bias_level(dapm)) {
@ -264,7 +264,7 @@ static int pcm512x_overclock_dsp_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
switch (snd_soc_dapm_get_bias_level(dapm)) {
@ -293,7 +293,7 @@ static int pcm512x_overclock_dac_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
switch (snd_soc_dapm_get_bias_level(dapm)) {