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authorTakashi Iwai <tiwai@suse.de>2007-01-26 12:40:31 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2007-01-29 14:32:53 -0800
commit7d2aae1e88660cf09be913e9754e45189dc33412 (patch)
treeaf56ebcced14fb8e40640d9555129aab2ffa0532 /sound/core/sound.c
parent5263bf65d6342e12ab716db8e529501670979321 (diff)
[PATCH] ALSA: Fix sysfs breakage
The recent change for a new sysfs tree with card* object breaks the /sys/class/sound tree if CONFIG_SYSFS_DEPRECATED is enabled. The device in each entry doesn't point the correct device object: /sys/class/sound ... |-- pcmC0D0c | |-- dev | |-- device -> ../../../class/sound/card0 | |-- pcm_class | |-- power | | `-- wakeup | |-- subsystem -> ../../../class/sound | `-- uevent Also, this change breaks some drivers (like sound/arm/*) referring card->dev directly to obtain the device object for memory handling. This patch reverts the semantics of card->dev to the former version, which points to a real device object. The card* object is stored in a new card->card_dev field, instead. The device parent is chosen either card->dev or card->card_dev according to CONFIG_SYSFS_DEPRECATED to keep the tree compatibility. Also, card* isn't created if CONFIG_SYSFS_DEPRECATED is enabled. The reason of card* object is a root of all beloing devices, and it makes little sense if each sound device points to the real device object directly. Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Monty Montgomery <xiphmont@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound/core/sound.c')
-rw-r--r--sound/core/sound.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 282742022de..82a61c67cf3 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -238,7 +238,7 @@ int snd_register_device(int type, struct snd_card *card, int dev,
{
int minor;
struct snd_minor *preg;
- struct device *device = NULL;
+ struct device *device = snd_card_get_device_link(card);
snd_assert(name, return -EINVAL);
preg = kmalloc(sizeof *preg, GFP_KERNEL);
@@ -263,8 +263,6 @@ int snd_register_device(int type, struct snd_card *card, int dev,
return minor;
}
snd_minors[minor] = preg;
- if (card)
- device = card->dev;
preg->dev = device_create(sound_class, device, MKDEV(major, minor),
"%s", name);
if (preg->dev)