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path: root/drivers/isdn/hardware/eicon/divamnt.c
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Diffstat (limited to 'drivers/isdn/hardware/eicon/divamnt.c')
-rw-r--r--drivers/isdn/hardware/eicon/divamnt.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c
index 1e85f743214e..f1d464f1e107 100644
--- a/drivers/isdn/hardware/eicon/divamnt.c
+++ b/drivers/isdn/hardware/eicon/divamnt.c
@@ -14,7 +14,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/poll.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include "platform.h"
@@ -22,6 +22,7 @@
#include "divasync.h"
#include "debug_if.h"
+static DEFINE_MUTEX(maint_mutex);
static char *main_revision = "$Revision: 1.32.6.10 $";
static int major;
@@ -130,7 +131,7 @@ static int maint_open(struct inode *ino, struct file *filep)
{
int ret;
- lock_kernel();
+ mutex_lock(&maint_mutex);
/* only one open is allowed, so we test
it atomically */
if (test_and_set_bit(0, &opened))
@@ -139,7 +140,7 @@ static int maint_open(struct inode *ino, struct file *filep)
filep->private_data = NULL;
ret = nonseekable_open(ino, filep);
}
- unlock_kernel();
+ mutex_unlock(&maint_mutex);
return ret;
}