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path: root/drivers/scsi/st.c
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Diffstat (limited to 'drivers/scsi/st.c')
-rw-r--r--drivers/scsi/st.c42
1 files changed, 9 insertions, 33 deletions
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index c4aade8f5345..13b1d3aac265 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -38,6 +38,7 @@ static const char *verstr = "20050830";
#include <linux/devfs_fs_kernel.h>
#include <linux/cdev.h>
#include <linux/delay.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/dma.h>
@@ -193,7 +194,6 @@ static int sgl_unmap_user_pages(struct scatterlist *, const unsigned int, int);
static int st_probe(struct device *);
static int st_remove(struct device *);
-static int st_init_command(struct scsi_cmnd *);
static void do_create_driverfs_files(void);
static void do_remove_driverfs_files(void);
@@ -206,7 +206,6 @@ static struct scsi_driver st_template = {
.probe = st_probe,
.remove = st_remove,
},
- .init_command = st_init_command,
};
static int st_compression(struct scsi_tape *, int);
@@ -220,7 +219,7 @@ static void scsi_tape_release(struct kref *);
#define to_scsi_tape(obj) container_of(obj, struct scsi_tape, kref)
-static DECLARE_MUTEX(st_ref_sem);
+static DEFINE_MUTEX(st_ref_mutex);
#include "osst_detect.h"
@@ -237,7 +236,7 @@ static struct scsi_tape *scsi_tape_get(int dev)
{
struct scsi_tape *STp = NULL;
- down(&st_ref_sem);
+ mutex_lock(&st_ref_mutex);
write_lock(&st_dev_arr_lock);
if (dev < st_dev_max && scsi_tapes != NULL)
@@ -259,7 +258,7 @@ out_put:
STp = NULL;
out:
write_unlock(&st_dev_arr_lock);
- up(&st_ref_sem);
+ mutex_unlock(&st_ref_mutex);
return STp;
}
@@ -267,10 +266,10 @@ static void scsi_tape_put(struct scsi_tape *STp)
{
struct scsi_device *sdev = STp->device;
- down(&st_ref_sem);
+ mutex_lock(&st_ref_mutex);
kref_put(&STp->kref, scsi_tape_release);
scsi_device_put(sdev);
- up(&st_ref_sem);
+ mutex_unlock(&st_ref_mutex);
}
struct st_reject_data {
@@ -4141,9 +4140,9 @@ static int st_remove(struct device *dev)
}
}
- down(&st_ref_sem);
+ mutex_lock(&st_ref_mutex);
kref_put(&tpnt->kref, scsi_tape_release);
- up(&st_ref_sem);
+ mutex_unlock(&st_ref_mutex);
return 0;
}
}
@@ -4156,7 +4155,7 @@ static int st_remove(struct device *dev)
* scsi_tape_release - Called to free the Scsi_Tape structure
* @kref: pointer to embedded kref
*
- * st_ref_sem must be held entering this routine. Because it is
+ * st_ref_mutex must be held entering this routine. Because it is
* called on last put, you should always use the scsi_tape_get()
* scsi_tape_put() helpers which manipulate the semaphore directly
* and never do a direct kref_put().
@@ -4180,29 +4179,6 @@ static void scsi_tape_release(struct kref *kref)
return;
}
-static void st_intr(struct scsi_cmnd *SCpnt)
-{
- /*
- * The caller should be checking the request's errors
- * value.
- */
- scsi_io_completion(SCpnt, SCpnt->bufflen, 0);
-}
-
-/*
- * st_init_command: only called via the scsi_cmd_ioctl (block SG_IO)
- * interface for REQ_BLOCK_PC commands.
- */
-static int st_init_command(struct scsi_cmnd *SCpnt)
-{
- if (!(SCpnt->request->flags & REQ_BLOCK_PC))
- return 0;
-
- scsi_setup_blk_pc_cmnd(SCpnt);
- SCpnt->done = st_intr;
- return 1;
-}
-
static int __init init_st(void)
{
validate_options();