diff options
Diffstat (limited to 'drivers/scsi/sr.c')
| -rw-r--r-- | drivers/scsi/sr.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index a4d9be7..ec73223 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -44,6 +44,7 @@ #include <linux/interrupt.h> #include <linux/init.h> #include <linux/blkdev.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #include <scsi/scsi.h> @@ -90,7 +91,7 @@ static DEFINE_SPINLOCK(sr_index_lock); /* This semaphore is used to mediate the 0->1 reference get in the * face of object destruction (i.e. we can't allow a get on an * object after last put) */ -static DECLARE_MUTEX(sr_ref_sem); +static DEFINE_MUTEX(sr_ref_mutex); static int sr_open(struct cdrom_device_info *, int); static void sr_release(struct cdrom_device_info *); @@ -133,7 +134,7 @@ static inline struct scsi_cd *scsi_cd_get(struct gendisk *disk) { struct scsi_cd *cd = NULL; - down(&sr_ref_sem); + mutex_lock(&sr_ref_mutex); if (disk->private_data == NULL) goto out; cd = scsi_cd(disk); @@ -146,7 +147,7 @@ static inline struct scsi_cd *scsi_cd_get(struct gendisk *disk) kref_put(&cd->kref, sr_kref_release); cd = NULL; out: - up(&sr_ref_sem); + mutex_unlock(&sr_ref_mutex); return cd; } @@ -154,10 +155,10 @@ static inline void scsi_cd_put(struct scsi_cd *cd) { struct scsi_device *sdev = cd->device; - down(&sr_ref_sem); + mutex_lock(&sr_ref_mutex); kref_put(&cd->kref, sr_kref_release); scsi_device_put(sdev); - up(&sr_ref_sem); + mutex_unlock(&sr_ref_mutex); } /* @@ -845,7 +846,7 @@ static int sr_packet(struct cdrom_device_info *cdi, * sr_kref_release - Called to free the scsi_cd structure * @kref: pointer to embedded kref * - * sr_ref_sem must be held entering this routine. Because it is + * sr_ref_mutex must be held entering this routine. Because it is * called on last put, you should always use the scsi_cd_get() * scsi_cd_put() helpers which manipulate the semaphore directly * and never do a direct kref_put(). @@ -874,9 +875,9 @@ static int sr_remove(struct device *dev) del_gendisk(cd->disk); - down(&sr_ref_sem); + mutex_lock(&sr_ref_mutex); kref_put(&cd->kref, sr_kref_release); - up(&sr_ref_sem); + mutex_unlock(&sr_ref_mutex); return 0; } |