[SCSI] st: Use mutex instead of semaphore
The SCSI Tape driver uses a semaphore as mutex. Use the mutex API
instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/st.h b/drivers/scsi/st.h
index 50f3deb..6c80757 100644
--- a/drivers/scsi/st.h
+++ b/drivers/scsi/st.h
@@ -3,6 +3,7 @@
#define _ST_H
#include <linux/completion.h>
+#include <linux/mutex.h>
#include <linux/kref.h>
#include <scsi/scsi_cmnd.h>
@@ -98,7 +99,7 @@
struct scsi_tape {
struct scsi_driver *driver;
struct scsi_device *device;
- struct semaphore lock; /* For serialization */
+ struct mutex lock; /* For serialization */
struct completion wait; /* For SCSI commands */
struct st_buffer *buffer;