author: Jes Sorensen <jes@sgi.com> 2006-02-06 14:12:43 -0800
committer: Greg Kroah-Hartman <gregkh@suse.de> 2006-03-20 13:42:58 -0800
commit: 58383af629efb07e5a0694e445eda0c65b16e1de
parent: 8b5536bbee53620f8d5f367987e5727ba36d886d
Commit Summary:
Diffstat:
1 file changed, 9 insertions, 8 deletions
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 21195c481637..5c36345c9bf7 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -19,6 +19,7 @@
#include <linux/kobject.h>
#include <linux/kobj_map.h>
#include <linux/cdev.h>
+#include <linux/mutex.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
@@ -28,7 +29,7 @@ static struct kobj_map *cdev_map;
#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;
@@ -88,13 +89,13 @@ out:
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);
}
@@ -151,7 +152,7 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
memset(cd, 0, sizeof(struct char_device_struct));
- down(&chrdevs_lock);
+ mutex_lock(&chrdevs_lock);
/* temporary */
if (major == 0) {
@@ -186,10 +187,10 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor,
}
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);
}
@@ -200,7 +201,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
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 &&
@@ -210,7 +211,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
cd = *cp;
*cp = cd->next;
}
- up(&chrdevs_lock);
+ mutex_unlock(&chrdevs_lock);
return cd;
}