path: root/include/sound
diff options
authorJyri Sarha <jsarha@ti.com>2015-11-10 18:12:42 +0200
committerMark Brown <broonie@kernel.org>2015-11-10 18:52:06 +0000
commitfd589a1be20fdd76ef97700dd0185e7a060546dc (patch)
tree93a642eaf9fd2868431a06da7556d2e87b831762 /include/sound
parentbb9a13a0209c56cdf27d125a1f2f6f34378c64f4 (diff)
ASoC: dapm: Reset dapm wcache after freeing damp widgets
If there is anything in damp->path_source_cache or damp->path_sink_cache, it can not be valid after the widgets have been freed. Without this patch a repeated remove and load of a machine driver may cause NULL pointer reference in dapm_wcache_lookup() when a freed widget, not belonging to any list, is haunting in the wcache. Signed-off-by: Jyri Sarha <jsarha@ti.com> Reported-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 7855cfe46b69..95a937eafb79 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -398,6 +398,7 @@ int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
const struct snd_soc_dapm_route *route, int num);
void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w);
+void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm);
/* dapm events */
void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,