When a widget is added to dapm via snd_soc_dapm_new_widgets, dapm_debugfs_add_widget is also called to create a corresponding debugfs file. However, when a widget is freed by snd_soc_dapm_free_widget, the corresponding debugfs is not cleared. As a result, the freed widget is still seen in the dapm directory.
This patch adds dapm_debugfs_free_widget to free the debugfs of a specified widget, and it's called at snd_soc_dapm_free_widget to clean up the debugfs for freed widget.
Signed-off-by: Trevor Wu trevor.wu@mediatek.com --- sound/soc/soc-dapm.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index f2f04ce693a1..c65cc374bb3f 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2216,6 +2216,16 @@ static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) &dapm_widget_power_fops); }
+static void dapm_debugfs_free_widget(struct snd_soc_dapm_widget *w) +{ + struct snd_soc_dapm_context *dapm = w->dapm; + + if (!dapm->debugfs_dapm || !w->name) + return; + + debugfs_lookup_and_remove(w->name, dapm->debugfs_dapm); +} + static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) { debugfs_remove_recursive(dapm->debugfs_dapm); @@ -2232,6 +2242,10 @@ static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w) { }
+static inline void dapm_debugfs_free_widget(struct snd_soc_dapm_widget *w) +{ +} + static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm) { } @@ -2495,6 +2509,8 @@ void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w) dapm_free_path(p); }
+ dapm_debugfs_free_widget(w); + kfree(w->kcontrols); kfree_const(w->name); kfree_const(w->sname);