[PATCH] Assign device pointer to OSS devices
Add register_sound_special_device() function to allow assignment of
device pointer to a specific OSS device for HAL.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/include/linux/sound.h b/include/linux/sound.h
index 428f597..72b9af4 100644
--- a/include/linux/sound.h
+++ b/include/linux/sound.h
@@ -29,7 +29,9 @@
* Sound core interface functions
*/
+struct device;
extern int register_sound_special(struct file_operations *fops, int unit);
+extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
extern int register_sound_mixer(struct file_operations *fops, int dev);
extern int register_sound_midi(struct file_operations *fops, int dev);
extern int register_sound_dsp(struct file_operations *fops, int dev);
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index de39d212..e401c67 100644
--- a/sound/core/sound_oss.c
+++ b/sound/core/sound_oss.c
@@ -98,6 +98,7 @@
int cidx = SNDRV_MINOR_OSS_CARD(minor);
int track2 = -1;
int register1 = -1, register2 = -1;
+ struct device *carddev = NULL;
if (minor < 0)
return minor;
@@ -121,11 +122,13 @@
track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
break;
}
- register1 = register_sound_special(reg->f_ops, minor);
+ if (card)
+ carddev = card->dev;
+ register1 = register_sound_special_device(reg->f_ops, minor, carddev);
if (register1 != minor)
goto __end;
if (track2 >= 0) {
- register2 = register_sound_special(reg->f_ops, track2);
+ register2 = register_sound_special_device(reg->f_ops, track2, carddev);
if (register2 != track2)
goto __end;
}
diff --git a/sound/sound_core.c b/sound/sound_core.c
index 21a69e0..954f994 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -153,7 +153,7 @@
* list. Acquires locks as needed
*/
-static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode)
+static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
{
struct sound_unit *s = kmalloc(sizeof(*s), GFP_KERNEL);
int r;
@@ -175,7 +175,7 @@
devfs_mk_cdev(MKDEV(SOUND_MAJOR, s->unit_minor),
S_IFCHR | mode, s->name);
class_device_create(sound_class, MKDEV(SOUND_MAJOR, s->unit_minor),
- NULL, s->name+6);
+ dev, s->name+6);
return r;
fail:
@@ -227,16 +227,18 @@
static struct sound_unit *chains[SOUND_STEP];
/**
- * register_sound_special - register a special sound node
+ * register_sound_special_device - register a special sound node
* @fops: File operations for the driver
* @unit: Unit number to allocate
+ * @dev: device pointer
*
* Allocate a special sound device by minor number from the sound
* subsystem. The allocated number is returned on succes. On failure
* a negative error code is returned.
*/
-int register_sound_special(struct file_operations *fops, int unit)
+int register_sound_special_device(struct file_operations *fops, int unit,
+ struct device *dev)
{
const int chain = unit % SOUND_STEP;
int max_unit = 128 + chain;
@@ -294,9 +296,16 @@
break;
}
return sound_insert_unit(&chains[chain], fops, -1, unit, max_unit,
- name, S_IRUSR | S_IWUSR);
+ name, S_IRUSR | S_IWUSR, dev);
}
+EXPORT_SYMBOL(register_sound_special_device);
+
+int register_sound_special(struct file_operations *fops, int unit)
+{
+ return register_sound_special_device(fops, unit, NULL);
+}
+
EXPORT_SYMBOL(register_sound_special);
/**
@@ -312,7 +321,7 @@
int register_sound_mixer(struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[0], fops, dev, 0, 128,
- "mixer", S_IRUSR | S_IWUSR);
+ "mixer", S_IRUSR | S_IWUSR, NULL);
}
EXPORT_SYMBOL(register_sound_mixer);
@@ -330,7 +339,7 @@
int register_sound_midi(struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[2], fops, dev, 2, 130,
- "midi", S_IRUSR | S_IWUSR);
+ "midi", S_IRUSR | S_IWUSR, NULL);
}
EXPORT_SYMBOL(register_sound_midi);
@@ -356,7 +365,7 @@
int register_sound_dsp(struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[3], fops, dev, 3, 131,
- "dsp", S_IWUSR | S_IRUSR);
+ "dsp", S_IWUSR | S_IRUSR, NULL);
}
EXPORT_SYMBOL(register_sound_dsp);
@@ -375,7 +384,7 @@
int register_sound_synth(struct file_operations *fops, int dev)
{
return sound_insert_unit(&chains[9], fops, dev, 9, 137,
- "synth", S_IRUSR | S_IWUSR);
+ "synth", S_IRUSR | S_IWUSR, NULL);
}
EXPORT_SYMBOL(register_sound_synth);