ALSA: Create sysfs attribute files via groups
Instead of calling each time device_create_file(), create the groups
of sysfs attribute files at once in a normal way. Add a new helper
function, snd_get_device(), to return the associated device object,
so that we can handle the sysfs addition locally.
Since the sysfs file addition is done differently now,
snd_add_device_sysfs_file() helper function is removed.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/include/sound/hwdep.h b/include/sound/hwdep.h
index 6233eb0..193a3c5 100644
--- a/include/sound/hwdep.h
+++ b/include/sound/hwdep.h
@@ -68,6 +68,7 @@
wait_queue_head_t open_wait;
void *private_data;
void (*private_free) (struct snd_hwdep *hwdep);
+ const struct attribute_group **groups;
struct mutex open_mutex;
int used; /* reference counter */