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Diffstat (limited to 'kernel/sound/soc/soc-dapm.c')
-rw-r--r--kernel/sound/soc/soc-dapm.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/kernel/sound/soc/soc-dapm.c b/kernel/sound/soc/soc-dapm.c
index 158204d08..b6c12dccb 100644
--- a/kernel/sound/soc/soc-dapm.c
+++ b/kernel/sound/soc/soc-dapm.c
@@ -1811,6 +1811,7 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
size_t count, loff_t *ppos)
{
struct snd_soc_dapm_widget *w = file->private_data;
+ struct snd_soc_card *card = w->dapm->card;
char *buf;
int in, out;
ssize_t ret;
@@ -1820,6 +1821,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
if (!buf)
return -ENOMEM;
+ mutex_lock(&card->dapm_mutex);
+
/* Supply widgets are not handled by is_connected_{input,output}_ep() */
if (w->is_supply) {
in = 0;
@@ -1866,6 +1869,8 @@ static ssize_t dapm_widget_power_read_file(struct file *file,
p->sink->name);
}
+ mutex_unlock(&card->dapm_mutex);
+
ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
kfree(buf);
@@ -2140,11 +2145,15 @@ static ssize_t dapm_widget_show(struct device *dev,
struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
int i, count = 0;
+ mutex_lock(&rtd->card->dapm_mutex);
+
for (i = 0; i < rtd->num_codecs; i++) {
struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
count += dapm_widget_show_codec(codec, buf + count);
}
+ mutex_unlock(&rtd->card->dapm_mutex);
+
return count;
}
@@ -3100,16 +3109,10 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
}
prefix = soc_dapm_prefix(dapm);
- if (prefix) {
+ if (prefix)
w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
- if (widget->sname)
- w->sname = kasprintf(GFP_KERNEL, "%s %s", prefix,
- widget->sname);
- } else {
+ else
w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
- if (widget->sname)
- w->sname = kasprintf(GFP_KERNEL, "%s", widget->sname);
- }
if (w->name == NULL) {
kfree(w);
return NULL;
@@ -3557,7 +3560,7 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
break;
}
- if (!w->sname || !strstr(w->sname, dai_w->name))
+ if (!w->sname || !strstr(w->sname, dai_w->sname))
continue;
if (dai_w->id == snd_soc_dapm_dai_in) {