/*
* Advanced Linux Sound Architecture
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
*
*/
-#include <sound/driver.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/time.h>
static int cards_limit = 1;
-MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards.");
MODULE_LICENSE("GPL");
module_param(major, int, 0444);
*/
void snd_request_card(int card)
{
- if (! current->fs->root)
- return;
if (snd_card_locked(card))
return;
if (card < 0 || card >= cards_limit)
{
char *str;
- if (! current->fs->root)
- return;
switch (minor) {
case SNDRV_MINOR_SEQUENCER: str = "snd-seq"; break;
case SNDRV_MINOR_TIMER: str = "snd-timer"; break;
return err;
}
-static struct file_operations snd_fops =
+static const struct file_operations snd_fops =
{
.owner = THIS_MODULE,
.open = snd_open
#endif
/**
- * snd_register_device - Register the ALSA device file for the card
+ * snd_register_device_for_dev - Register the ALSA device file for the card
* @type: the device type, SNDRV_DEVICE_TYPE_XXX
* @card: the card instance
* @dev: the device index
* @f_ops: the file operations
* @private_data: user pointer for f_ops->open()
* @name: the device file name
+ * @device: the &struct device to link this new device to
*
* Registers an ALSA device file for the given card.
* The operators have to be set in reg parameter.
*
- * Retrurns zero if successful, or a negative error code on failure.
+ * Returns zero if successful, or a negative error code on failure.
*/
-int snd_register_device(int type, struct snd_card *card, int dev,
- const struct file_operations *f_ops, void *private_data,
- const char *name)
+int snd_register_device_for_dev(int type, struct snd_card *card, int dev,
+ const struct file_operations *f_ops,
+ void *private_data,
+ const char *name, struct device *device)
{
int minor;
struct snd_minor *preg;
- struct device *device = NULL;
snd_assert(name, return -EINVAL);
preg = kmalloc(sizeof *preg, GFP_KERNEL);
return minor;
}
snd_minors[minor] = preg;
- if (card)
- device = card->dev;
preg->dev = device_create(sound_class, device, MKDEV(major, minor),
"%s", name);
+ if (IS_ERR(preg->dev)) {
+ snd_minors[minor] = NULL;
+ mutex_unlock(&sound_mutex);
+ minor = PTR_ERR(preg->dev);
+ kfree(preg);
+ return minor;
+ }
+
if (preg->dev)
dev_set_drvdata(preg->dev, private_data);
return 0;
}
-EXPORT_SYMBOL(snd_register_device);
+EXPORT_SYMBOL(snd_register_device_for_dev);
/* find the matching minor record
* return the index of snd_minor, or -1 if not found
{
snd_info_minor_unregister();
snd_info_done();
- if (unregister_chrdev(major, "alsa") != 0)
- snd_printk(KERN_ERR "unable to unregister major device number %d\n", major);
+ unregister_chrdev(major, "alsa");
}
module_init(alsa_sound_init)