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| author | Jes Sorensen <jes@sgi.com> | 2006-03-23 03:00:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 07:38:11 -0800 |
| commit | 1657f824e880a9bd239a3436b820d1a2986f763d (patch) | |
| tree | d5108e52c67623dc9efbdfd0ebcc327538b0bd71 | |
| parent | 97d1f15b7ef52c1e9c28dc48b454024bb53a5fd2 (diff) | |
| download | kernel_samsung_smdk4412-1657f824e880a9bd239a3436b820d1a2986f763d.tar.gz kernel_samsung_smdk4412-1657f824e880a9bd239a3436b820d1a2986f763d.tar.bz2 kernel_samsung_smdk4412-1657f824e880a9bd239a3436b820d1a2986f763d.zip | |
[PATCH] sem2mutex: drivers/block/pktcdvd.c
Convert to use mutex from a semaphore
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/block/pktcdvd.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 476a5b553f3..1d261f985f3 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); |