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authorTakashi Iwai <tiwai@suse.de>2015-06-23 11:56:22 +0200
committerTakashi Iwai <tiwai@suse.de>2015-06-23 11:56:22 +0200
commit60b93030b44a8c2cd015cebe5624fd7552ec67ec (patch)
tree0912aa23b905221cedb19f7956b228f99766e06f /sound/core/pcm.c
parentc7988afde761cdb571b4e9e8d2ee741dea4b5389 (diff)
downloadlinux-linaro-stable-60b93030b44a8c2cd015cebe5624fd7552ec67ec.tar.gz
ALSA: pcm: Fix pcm_class sysfs output
The pcm_class sysfs of each PCM substream gives only "none" since the recent code change to embed the struct device. Fix the code to point directly to the embedded device object properly. Fixes: ef46c7af93f9 ('ALSA: pcm: Embed struct device') Cc: <stable@vger.kernel.org> # v4.0+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm.c')
-rw-r--r--sound/core/pcm.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index e53794319ef3..02bd96954dc4 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -1027,7 +1027,8 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
static ssize_t show_pcm_class(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct snd_pcm *pcm;
+ struct snd_pcm_str *pstr = container_of(dev, struct snd_pcm_str, dev);
+ struct snd_pcm *pcm = pstr->pcm;
const char *str;
static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = {
[SNDRV_PCM_CLASS_GENERIC] = "generic",
@@ -1036,8 +1037,7 @@ static ssize_t show_pcm_class(struct device *dev,
[SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
};
- if (! (pcm = dev_get_drvdata(dev)) ||
- pcm->dev_class > SNDRV_PCM_CLASS_LAST)
+ if (pcm->dev_class > SNDRV_PCM_CLASS_LAST)
str = "none";
else
str = strs[pcm->dev_class];