#include <linux/cdev.h>
#include <linux/delay.h>
#include <linux/mutex.h>
-#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/dma.h>
#include "st_options.h"
#include "st.h"
+static DEFINE_MUTEX(st_mutex);
static int buffer_kbs;
static int max_sg_segs;
static int try_direct_io = TRY_DIRECT_IO;
int dev = TAPE_NR(inode);
char *name;
- lock_kernel();
+ mutex_lock(&st_mutex);
/*
* We really want to do nonseekable_open(inode, filp); here, but some
* versions of tar incorrectly call lseek on tapes and bail out if that
filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE);
if (!(STp = scsi_tape_get(dev))) {
- unlock_kernel();
+ mutex_unlock(&st_mutex);
return -ENXIO;
}
if (STp->in_use) {
write_unlock(&st_dev_arr_lock);
scsi_tape_put(STp);
- unlock_kernel();
+ mutex_unlock(&st_mutex);
DEB( printk(ST_DEB_MSG "%s: Device already in use.\n", name); )
return (-EBUSY);
}
retval = (-EIO);
goto err_out;
}
- unlock_kernel();
+ mutex_unlock(&st_mutex);
return 0;
err_out:
normalize_buffer(STp->buffer);
STp->in_use = 0;
scsi_tape_put(STp);
- unlock_kernel();
+ mutex_unlock(&st_mutex);
return retval;
}