diff options
Diffstat (limited to 'drivers/block/paride/pt.c')
| -rw-r--r-- | drivers/block/paride/pt.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index bc5825fdeaab..7179f79d7468 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); @@ -239,6 +240,7 @@ static const struct file_operations pt_fops = { .unlocked_ioctl = pt_ioctl, .open = pt_open, .release = pt_release, + .llseek = noop_llseek, }; /* sysfs class support */ @@ -650,9 +652,9 @@ 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 +683,12 @@ 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 +706,15 @@ 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: |