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[SCSI] sem2mutex 3w-[x9]xxx

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Convert a the 3w-9xxx.c and 3w-xxxx.c drivers to use mutexes instead
of semaphores. Untested, but compiles and looks obviously correct.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Jes Sorensen
2006-01-11 08:39:45 -05:00
committed by James Bottomley
parent 3759b78849
commit a12e25bd59
4 changed files with 10 additions and 8 deletions
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7
drivers/scsi/3w-xxxx.c
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@@ -203,6 +203,7 @@
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/time.h>
#include <linux/mutex.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
@@ -888,7 +889,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n");
/* Only let one of these through at a time */
if (down_interruptible(&tw_dev->ioctl_sem))
if (mutex_lock_interruptible(&tw_dev->ioctl_lock))
return -EINTR;
/* First copy down the buffer length */
@@ -1029,7 +1030,7 @@ out2:
/* Now free ioctl buf memory */
dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle);
out:
up(&tw_dev->ioctl_sem);
mutex_unlock(&tw_dev->ioctl_lock);
return retval;
} /* End tw_chrdev_ioctl() */
@@ -1270,7 +1271,7 @@ static int tw_initialize_device_extension(TW_Device_Extension *tw_dev)
tw_dev->pending_tail = TW_Q_START;
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
init_MUTEX(&tw_dev->ioctl_sem);
mutex_init(&tw_dev->ioctl_lock);
init_waitqueue_head(&tw_dev->ioctl_wqueue);
return 0;