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path: root/drivers/isdn/divert/divert_procfs.c
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Diffstat (limited to 'drivers/isdn/divert/divert_procfs.c')
-rw-r--r--drivers/isdn/divert/divert_procfs.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
index c53e2417e7d4..33ec9e467772 100644
--- a/drivers/isdn/divert/divert_procfs.c
+++ b/drivers/isdn/divert/divert_procfs.c
@@ -20,7 +20,7 @@
#include <linux/sched.h>
#include <linux/isdnif.h>
#include <net/net_namespace.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include "isdn_divert.h"
@@ -28,6 +28,7 @@
/* Variables for interface queue */
/*********************************/
ulong if_used = 0; /* number of interface users */
+static DEFINE_MUTEX(isdn_divert_mutex);
static struct divert_info *divert_info_head = NULL; /* head of queue */
static struct divert_info *divert_info_tail = NULL; /* pointer to last entry */
static DEFINE_SPINLOCK(divert_info_lock);/* lock for queue */
@@ -261,9 +262,9 @@ static long isdn_divert_ioctl(struct file *file, uint cmd, ulong arg)
{
long ret;
- lock_kernel();
+ mutex_lock(&isdn_divert_mutex);
ret = isdn_divert_ioctl_unlocked(file, cmd, arg);
- unlock_kernel();
+ mutex_unlock(&isdn_divert_mutex);
return ret;
}