diff options
Diffstat (limited to 'drivers/isdn/hardware/eicon/divamnt.c')
| -rw-r--r-- | drivers/isdn/hardware/eicon/divamnt.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c index 1e85f743214..f1d464f1e10 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; } |