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| author |   Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-08-10 14:50:44 -0700 |
|---|---|---|
| committer |   James Bottomley <jejb@mulgrave.localdomain> | 2007-10-12 14:50:55 -0400 |
| commit | 4390e60163979621f59e3a25a260289986eacb85 (patch) | |
| tree | 66bdf6c2077f3cf5ef3617f56f5857b9484d6b5f | |
| parent | [SCSI] arcmsr: irq handler fixes, cleanups, micro-opts (diff) | |
| download | linux-dev-4390e60163979621f59e3a25a260289986eacb85.tar.xz linux-dev-4390e60163979621f59e3a25a260289986eacb85.zip | |
[SCSI] osst: Use mutex instead of semaphore
The OnStream SCSI Tape driver uses a semaphore as mutex. Use the mutex API
instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Reviewed-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Willem Riede <wrlk@riede.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/osst.c | 16 | ||||
| -rw-r--r-- | drivers/scsi/osst.h | 3 |
2 files changed, 10 insertions, 9 deletions
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c index 119739502095..331b789937c4 100644 --- a/drivers/scsi/osst.c +++ b/drivers/scsi/osst.c @@ -3298,7 +3298,7 @@ static ssize_t osst_write(struct file * filp, const char __user * buf, size_t co char * name = tape_name(STp); - if (down_interruptible(&STp->lock)) + if (mutex_lock_interruptible(&STp->lock)) return (-ERESTARTSYS); /* @@ -3600,7 +3600,7 @@ if (SRpnt) printk(KERN_ERR "%s:A: Not supposed to have SRpnt at line %d\n", name out: if (SRpnt != NULL) osst_release_request(SRpnt); - up(&STp->lock); + mutex_unlock(&STp->lock); return retval; } @@ -3619,7 +3619,7 @@ static ssize_t osst_read(struct file * filp, char __user * buf, size_t count, lo char * name = tape_name(STp); - if (down_interruptible(&STp->lock)) + if (mutex_lock_interruptible(&STp->lock)) return (-ERESTARTSYS); /* @@ -3785,7 +3785,7 @@ static ssize_t osst_read(struct file * filp, char __user * buf, size_t count, lo out: if (SRpnt != NULL) osst_release_request(SRpnt); - up(&STp->lock); + mutex_unlock(&STp->lock); return retval; } @@ -4852,7 +4852,7 @@ static int osst_ioctl(struct inode * inode,struct file * file, char * name = tape_name(STp); void __user * p = (void __user *)arg; - if (down_interruptible(&STp->lock)) + if (mutex_lock_interruptible(&STp->lock)) return -ERESTARTSYS; #if DEBUG @@ -5163,14 +5163,14 @@ static int osst_ioctl(struct inode * inode,struct file * file, } if (SRpnt) osst_release_request(SRpnt); - up(&STp->lock); + mutex_unlock(&STp->lock); return scsi_ioctl(STp->device, cmd_in, p); out: if (SRpnt) osst_release_request(SRpnt); - up(&STp->lock); + mutex_unlock(&STp->lock); return retval; } @@ -5865,7 +5865,7 @@ static int osst_probe(struct device *dev) tpnt->modes[2].defined = 1; tpnt->density_changed = tpnt->compression_changed = tpnt->blksize_changed = 0; - init_MUTEX(&tpnt->lock); + mutex_init(&tpnt->lock); osst_nr_dev++; write_unlock(&os_scsi_tapes_lock); diff --git a/drivers/scsi/osst.h b/drivers/scsi/osst.h index 2cc7b5a1606a..5aa22740b5df 100644 --- a/drivers/scsi/osst.h +++ b/drivers/scsi/osst.h @@ -4,6 +4,7 @@ #include <asm/byteorder.h> #include <linux/completion.h> +#include <linux/mutex.h> /* FIXME - rename and use the following two types or delete them! * and the types really should go to st.h anyway... @@ -532,7 +533,7 @@ struct osst_tape { struct scsi_driver *driver; unsigned capacity; struct scsi_device *device; - struct semaphore lock; /* for serialization */ + struct mutex lock; /* for serialization */ struct completion wait; /* for SCSI commands */ struct osst_buffer * buffer; |