#include <linux/kobject.h>
#include <linux/kobj_map.h>
#include <linux/cdev.h>
+#include <linux/mutex.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#define MAX_PROBE_HASH 255 /* random */
-static DECLARE_MUTEX(chrdevs_lock);
+static DEFINE_MUTEX(chrdevs_lock);
static struct char_device_struct {
struct char_device_struct *next;
void *acquire_chrdev_list(void)
{
- down(&chrdevs_lock);
+ mutex_lock(&chrdevs_lock);
return get_next_chrdev(NULL);
}
void release_chrdev_list(void *dev)
{
- up(&chrdevs_lock);
+ mutex_unlock(&chrdevs_lock);
kfree(dev);
}
memset(cd, 0, sizeof(struct char_device_struct));
- down(&chrdevs_lock);
+ mutex_lock(&chrdevs_lock);
/* temporary */
if (major == 0) {
}
cd->next = *cp;
*cp = cd;
- up(&chrdevs_lock);
+ mutex_unlock(&chrdevs_lock);
return cd;
out:
- up(&chrdevs_lock);
+ mutex_unlock(&chrdevs_lock);
kfree(cd);
return ERR_PTR(ret);
}
struct char_device_struct *cd = NULL, **cp;
int i = major_to_index(major);
- down(&chrdevs_lock);
+ mutex_lock(&chrdevs_lock);
for (cp = &chrdevs[i]; *cp; cp = &(*cp)->next)
if ((*cp)->major == major &&
(*cp)->baseminor == baseminor &&
cd = *cp;
*cp = cd->next;
}
- up(&chrdevs_lock);
+ mutex_unlock(&chrdevs_lock);
return cd;
}