#include <linux/device.h>
#include <linux/fs.h>
#include <linux/cdev.h>
-
+#include <linux/mutex.h>
#include "dvbdev.h"
static int dvbdev_debug;
#define dprintk if (dvbdev_debug) printk
static LIST_HEAD(dvb_adapter_list);
-static DECLARE_MUTEX(dvbdev_register_lock);
+static DEFINE_MUTEX(dvbdev_register_lock);
static const char * const dnames[] = {
"video", "audio", "sec", "frontend", "demux", "dvr", "ca",
if (dvbdev && dvbdev->fops) {
int err = 0;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
file->private_data = dvbdev;
old_fops = file->f_op;
file->f_op = fops_get(dvbdev->fops);
if(file->f_op->open)
- err = file->f_op->open(inode,file);
+ err = file->f_op->open(inode,file);
if (err) {
- fops_put(file->f_op);
- file->f_op = fops_get(old_fops);
+ fops_put(file->f_op);
+ file->f_op = fops_get(old_fops);
}
fops_put(old_fops);
return err;
struct dvb_device *dvbdev;
int id;
- if (down_interruptible (&dvbdev_register_lock))
+ if (mutex_lock_interruptible(&dvbdev_register_lock))
return -ERESTARTSYS;
if ((id = dvbdev_get_free_id (adap, type)) < 0) {
- up (&dvbdev_register_lock);
+ mutex_unlock(&dvbdev_register_lock);
*pdvbdev = NULL;
printk ("%s: could get find free device id...\n", __FUNCTION__);
return -ENFILE;
*pdvbdev = dvbdev = kmalloc(sizeof(struct dvb_device), GFP_KERNEL);
if (!dvbdev) {
- up(&dvbdev_register_lock);
+ mutex_unlock(&dvbdev_register_lock);
return -ENOMEM;
}
- up (&dvbdev_register_lock);
-
memcpy(dvbdev, template, sizeof(struct dvb_device));
dvbdev->type = type;
dvbdev->id = id;
list_add_tail (&dvbdev->list_head, &adap->device_list);
+ mutex_unlock(&dvbdev_register_lock);
+
devfs_mk_cdev(MKDEV(DVB_MAJOR, nums2minor(adap->num, type, id)),
S_IFCHR | S_IRUSR | S_IWUSR,
"dvb/adapter%d/%s%d", adap->num, dnames[type], id);
{
int num;
- if (down_interruptible (&dvbdev_register_lock))
+ if (mutex_lock_interruptible(&dvbdev_register_lock))
return -ERESTARTSYS;
if ((num = dvbdev_get_free_adapter_num ()) < 0) {
- up (&dvbdev_register_lock);
+ mutex_unlock(&dvbdev_register_lock);
return -ENFILE;
}
list_add_tail (&adap->list_head, &dvb_adapter_list);
- up (&dvbdev_register_lock);
+ mutex_unlock(&dvbdev_register_lock);
return num;
}
{
devfs_remove("dvb/adapter%d", adap->num);
- if (down_interruptible (&dvbdev_register_lock))
+ if (mutex_lock_interruptible(&dvbdev_register_lock))
return -ERESTARTSYS;
list_del (&adap->list_head);
- up (&dvbdev_register_lock);
+ mutex_unlock(&dvbdev_register_lock);
return 0;
}
EXPORT_SYMBOL(dvb_unregister_adapter);
case _IOC_WRITE:
case (_IOC_WRITE | _IOC_READ):
if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
- parg = sbuf;
+ parg = sbuf;
} else {
- /* too big to allocate from stack */
- mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
- if (NULL == mbuf)
- return -ENOMEM;
- parg = mbuf;
+ /* too big to allocate from stack */
+ mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
+ if (NULL == mbuf)
+ return -ENOMEM;
+ parg = mbuf;
}
err = -EFAULT;
if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
- goto out;
+ goto out;
break;
}
case _IOC_READ:
case (_IOC_WRITE | _IOC_READ):
if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
- err = -EFAULT;
+ err = -EFAULT;
break;
}