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path: root/drivers/block/pktcdvd.c
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Diffstat (limited to 'drivers/block/pktcdvd.c')
-rw-r--r--drivers/block/pktcdvd.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 476a5b5..1d261f9 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -56,6 +56,7 @@
#include <linux/seq_file.h>
#include <linux/miscdevice.h>
#include <linux/suspend.h>
+#include <linux/mutex.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi.h>
@@ -81,7 +82,7 @@
static struct pktcdvd_device *pkt_devs[MAX_WRITERS];
static struct proc_dir_entry *pkt_proc;
static int pkt_major;
-static struct semaphore ctl_mutex; /* Serialize open/close/setup/teardown */
+static struct mutex ctl_mutex; /* Serialize open/close/setup/teardown */
static mempool_t *psd_pool;
@@ -2018,7 +2019,7 @@ static int pkt_open(struct inode *inode, struct file *file)
VPRINTK("pktcdvd: entering open\n");
- down(&ctl_mutex);
+ mutex_lock(&ctl_mutex);
pd = pkt_find_dev_from_minor(iminor(inode));
if (!pd) {
ret = -ENODEV;
@@ -2044,14 +2045,14 @@ static int pkt_open(struct inode *inode, struct file *file)
set_blocksize(inode->i_bdev, CD_FRAMESIZE);
}
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
return 0;
out_dec:
pd->refcnt--;
out:
VPRINTK("pktcdvd: failed open (%d)\n", ret);
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
return ret;
}
@@ -2060,14 +2061,14 @@ static int pkt_close(struct inode *inode, struct file *file)
struct pktcdvd_device *pd = inode->i_bdev->bd_disk->private_data;
int ret = 0;
- down(&ctl_mutex);
+ mutex_lock(&ctl_mutex);
pd->refcnt--;
BUG_ON(pd->refcnt < 0);
if (pd->refcnt == 0) {
int flush = test_bit(PACKET_WRITABLE, &pd->flags);
pkt_release_dev(pd, flush);
}
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
return ret;
}
@@ -2596,21 +2597,21 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
case PKT_CTRL_CMD_SETUP:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- down(&ctl_mutex);
+ mutex_lock(&ctl_mutex);
ret = pkt_setup_dev(&ctrl_cmd);
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
break;
case PKT_CTRL_CMD_TEARDOWN:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- down(&ctl_mutex);
+ mutex_lock(&ctl_mutex);
ret = pkt_remove_dev(&ctrl_cmd);
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
break;
case PKT_CTRL_CMD_STATUS:
- down(&ctl_mutex);
+ mutex_lock(&ctl_mutex);
pkt_get_status(&ctrl_cmd);
- up(&ctl_mutex);
+ mutex_unlock(&ctl_mutex);
break;
default:
return -ENOTTY;
@@ -2656,7 +2657,7 @@ static int __init pkt_init(void)
goto out;
}
- init_MUTEX(&ctl_mutex);
+ mutex_init(&ctl_mutex);
pkt_proc = proc_mkdir("pktcdvd", proc_root_driver);