1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c
index bc5825fdeaa..e4dda282e0a 100644
--- a/drivers/block/paride/pt.c
+++ b/drivers/block/paride/pt.c
@@ -146,7 +146,7 @@ static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3};
 #include <linux/mtio.h>
 #include <linux/device.h>
 #include <linux/sched.h>        /* current, TASK_*, schedule_timeout() */
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include <asm/uaccess.h>
 
@@ -189,6 +189,7 @@ module_param_array(drive3, int, NULL, 0);
 #define ATAPI_MODE_SENSE        0x1a
 #define ATAPI_LOG_SENSE         0x4d
 
+static DEFINE_MUTEX(pt_mutex);
 static int pt_open(struct inode *inode, struct file *file);
 static long pt_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
 static int pt_release(struct inode *inode, struct file *file);
@@ -650,9 +651,9 @@ static int pt_open(struct inode *inode, struct file *file)
         struct pt_unit *tape = pt + unit;
         int err;
 
-        lock_kernel();
+        mutex_lock(&pt_mutex);
         if (unit >= PT_UNITS || (!tape->present)) {
-                unlock_kernel();
+                mutex_unlock(&pt_mutex);
                 return -ENODEV;
         }
 
@@ -681,12 +682,12 @@ static int pt_open(struct inode *inode, struct file *file)
         }
 
         file->private_data = tape;
-        unlock_kernel();
+        mutex_unlock(&pt_mutex);
         return 0;
 
 out:
         atomic_inc(&tape->available);
-        unlock_kernel();
+        mutex_unlock(&pt_mutex);
         return err;
 }
 
@@ -704,15 +705,15 @@ static long pt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                 switch (mtop.mt_op) {
 
                 case MTREW:
-                        lock_kernel();
+                        mutex_lock(&pt_mutex);
                         pt_rewind(tape);
-                        unlock_kernel();
+                        mutex_unlock(&pt_mutex);
                         return 0;
 
                 case MTWEOF:
-                        lock_kernel();
+                        mutex_lock(&pt_mutex);
                         pt_write_fm(tape);
-                        unlock_kernel();
+                        mutex_unlock(&pt_mutex);
                         return 0;
 
                 default: