[PATCH] alsa: correct nonsensical sysfs device symlinks

[Christopher \"Monty\" Montgomery]

This patch was generated against 2.6.20-rc5; it fixes a bug that
cropped up in a late 2.6.19-mm kernel.

When ALSA's sysfs device creation was converted from using
class_device_create() to device_create(), the fourth param from
class_device_create() [dev] was simply plugged into arg 2 of
device_create().  This causes the device symlinks under all the
class/sound/[node] to point to nonsensical places.  Among other
problems, this breaks HAL and all audio software that depends on HAL.

The nature of this bug is not simply a need to update HAL;
class/[node]/device symlinks are required to point to a device entry
in /sys/devices; the bug causes them to point to other places within
/sys/class.  This patch is [hopefully] a trivial change to restore the
desired behavior.

Signed-off-by: Monty Montgomery <xiphmont@xxxxxxxxx>
---

Apologies for sending patch as text/plain attachment; we've
established in the past that Gmail will not leave unformatted text
email unmunged.
diff -uprN -X linux-2.6.20-rc5/Documentation/dontdiff linux-2.6.20-rc5/sound/core/sound.c linux-2.6.20-rc5-monty/sound/core/sound.c
--- linux-2.6.20-rc5/sound/core/sound.c	2007-01-12 13:54:26.000000000 -0500
+++ linux-2.6.20-rc5-monty/sound/core/sound.c	2007-01-24 20:30:07.000000000 -0500
@@ -265,7 +265,9 @@ int snd_register_device(int type, struct
 	snd_minors[minor] = preg;
 	if (card)
 		device = card->dev;
-	preg->dev = device_create(sound_class, device, MKDEV(major, minor),
+	preg->dev = device_create(sound_class, 
+				  (device?device->parent:NULL), 
+				  MKDEV(major, minor),
 				  "%s", name);
 	if (preg->dev)
 		dev_set_drvdata(preg->dev, private_data);