Driver core: convert sound core to use struct device
Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.
It also makes the struct sound_card to show up as a "real" device
where all the different sound class devices are placed as childs
and different card attribute files can hang off of. /sys/class/sound is
still a flat directory, but the symlink targets of all devices belonging
to the same card, point the the /sys/devices tree below the new card
device object.
Thanks to Kay for the updates to this patch.
Signed-off-by: Kay Sievers <kay.sievers@novell.com>
Acked-by: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index fbbbcd2..5ac6e19 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -910,7 +910,8 @@
substream->pstr->substream_opened--;
}
-static ssize_t show_pcm_class(struct class_device *class_device, char *buf)
+static ssize_t show_pcm_class(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct snd_pcm *pcm;
const char *str;
@@ -921,7 +922,7 @@
[SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
};
- if (! (pcm = class_get_devdata(class_device)) ||
+ if (! (pcm = dev_get_drvdata(dev)) ||
pcm->dev_class > SNDRV_PCM_CLASS_LAST)
str = "none";
else
@@ -929,7 +930,7 @@
return snprintf(buf, PAGE_SIZE, "%s\n", str);
}
-static struct class_device_attribute pcm_attrs =
+static struct device_attribute pcm_attrs =
__ATTR(pcm_class, S_IRUGO, show_pcm_class, NULL);
static int snd_pcm_dev_register(struct snd_device *device)