* locking at some point in 2.3.x.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/sound.h>
#include <linux/major.h>
#include <linux/kmod.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/device.h>
#define SOUND_STEP 16
struct sound_unit
{
int unit_minor;
- struct file_operations *unit_fops;
+ const struct file_operations *unit_fops;
struct sound_unit *next;
char name[32];
};
* join into it. Called with the lock asserted
*/
-static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, struct file_operations *fops, int index, int low, int top)
+static int __sound_insert_unit(struct sound_unit * s, struct sound_unit **list, const struct file_operations *fops, int index, int low, int top)
{
int n=low;
* 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, const 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;
else
sprintf(s->name, "sound/%s%d", name, r / SOUND_STEP);
- 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);
+ device_create(sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor),
+ s->name+6);
return r;
fail:
p = __sound_remove_unit(list, unit);
spin_unlock(&sound_loader_lock);
if (p) {
- devfs_remove(p->name);
- class_device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor));
+ device_destroy(sound_class, MKDEV(SOUND_MAJOR, p->unit_minor));
kfree(p);
}
}
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(const struct file_operations *fops, int unit,
+ struct device *dev)
{
const int chain = unit % SOUND_STEP;
int max_unit = 128 + chain;
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(const struct file_operations *fops, int unit)
+{
+ return register_sound_special_device(fops, unit, NULL);
+}
+
EXPORT_SYMBOL(register_sound_special);
/**
* number is returned, on failure a negative error code is returned.
*/
-int register_sound_mixer(struct file_operations *fops, int dev)
+int register_sound_mixer(const 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);
* number is returned, on failure a negative error code is returned.
*/
-int register_sound_midi(struct file_operations *fops, int dev)
+int register_sound_midi(const 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);
* and will always allocate them as a matching pair - eg dsp3/audio3
*/
-int register_sound_dsp(struct file_operations *fops, int dev)
+int register_sound_dsp(const 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);
/**
- * register_sound_synth - register a synth device
- * @fops: File operations for the driver
- * @dev: Unit number to allocate
- *
- * Allocate a synth device. Unit is the number of the synth device requested.
- * Pass -1 to request the next free synth unit. On success the allocated
- * number is returned, on failure a negative error code is returned.
- */
-
-
-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);
-}
-
-EXPORT_SYMBOL(register_sound_synth);
-
-/**
* unregister_sound_special - unregister a special sound device
* @unit: unit number to allocate
*
EXPORT_SYMBOL(unregister_sound_dsp);
-/**
- * unregister_sound_synth - unregister a synth device
- * @unit: unit number to allocate
- *
- * Release a sound device that was allocated with register_sound_synth().
- * The unit passed is the return value from the register function.
- */
-
-void unregister_sound_synth(int unit)
-{
- return sound_remove_unit(&chains[9], unit);
-}
-
-EXPORT_SYMBOL(unregister_sound_synth);
-
/*
* Now our file operations
*/
static int soundcore_open(struct inode *, struct file *);
-static struct file_operations soundcore_fops=
+static const struct file_operations soundcore_fops=
{
/* We must have an owner or the module locking fails */
.owner = THIS_MODULE,
int chain;
int unit = iminor(inode);
struct sound_unit *s;
- struct file_operations *new_fops = NULL;
+ const struct file_operations *new_fops = NULL;
+
+ lock_kernel ();
chain=unit&0x0F;
if(chain==4 || chain==5) /* dsp/audio/dsp16 */
* switching ->f_op in the first place.
*/
int err = 0;
- struct file_operations *old_fops = file->f_op;
+ const struct file_operations *old_fops = file->f_op;
file->f_op = new_fops;
spin_unlock(&sound_loader_lock);
if(file->f_op->open)
file->f_op = fops_get(old_fops);
}
fops_put(old_fops);
+ unlock_kernel();
return err;
}
spin_unlock(&sound_loader_lock);
+ unlock_kernel();
return -ENODEV;
}
-extern int mod_firmware_load(const char *, char **);
-EXPORT_SYMBOL(mod_firmware_load);
-
-
MODULE_DESCRIPTION("Core sound module");
MODULE_AUTHOR("Alan Cox");
MODULE_LICENSE("GPL");
/* We have nothing to really do here - we know the lists must be
empty */
unregister_chrdev(SOUND_MAJOR, "sound");
- devfs_remove("sound");
class_destroy(sound_class);
}
printk(KERN_ERR "soundcore: sound device already in use.\n");
return -EBUSY;
}
- devfs_mk_dir ("sound");
sound_class = class_create(THIS_MODULE, "sound");
if (IS_ERR(sound_class))
return PTR_ERR(sound_class);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff