[SCSI] sem2mutex 3w-[x9]xxx

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>

4 files changed, 10 insertions, 8 deletions

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index 3ff74f472249..31c497542272 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -73,6 +73,7 @@
 #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>
@@ -615,7 +616,7 @@ static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int
         void __user *argp = (void __user *)arg;
 
         /* Only let one of these through at a time */
-        if (down_interruptible(&tw_dev->ioctl_sem)) {
+        if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
                 retval = TW_IOCTL_ERROR_OS_EINTR;
                 goto out;
         }
@@ -852,7 +853,7 @@ out3:
         /* Now free ioctl buf memory */
         dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
 out2:
-        up(&tw_dev->ioctl_sem);
+        mutex_unlock(&tw_dev->ioctl_lock);
 out:
         return retval;
 } /* End twa_chrdev_ioctl() */
@@ -1182,7 +1183,7 @@ static int twa_initialize_device_extension(TW_Device_Extension *tw_dev)
         tw_dev->error_sequence_id = 1;
         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);
 
         retval = 0;
diff --git a/drivers/scsi/3w-9xxx.h b/drivers/scsi/3w-9xxx.h
index 46f22cdc8298..1b16d57f0314 100644
--- a/drivers/scsi/3w-9xxx.h
+++ b/drivers/scsi/3w-9xxx.h
@@ -672,7 +672,7 @@ typedef struct TAG_TW_Device_Extension {
         u32                     ioctl_msec;
         int                     chrdev_request_id;
         wait_queue_head_t       ioctl_wqueue;
-        struct semaphore        ioctl_sem;
+        struct mutex            ioctl_lock;
         char                    aen_clobber;
         unsigned short          working_srl;
         unsigned short          working_branch;
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 283f6d25892b..25f678d0780b 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -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;
diff --git a/drivers/scsi/3w-xxxx.h b/drivers/scsi/3w-xxxx.h
index 4f81fc39ec57..31fe5ea15920 100644
--- a/drivers/scsi/3w-xxxx.h
+++ b/drivers/scsi/3w-xxxx.h
@@ -420,7 +420,7 @@ typedef struct TAG_TW_Device_Extension {
         u32                     max_sector_count;
         u32                     aen_count;
         struct Scsi_Host        *host;
-        struct semaphore        ioctl_sem;
+        struct mutex            ioctl_lock;
         unsigned short          aen_queue[TW_Q_LENGTH];
         unsigned char           aen_head;
         unsigned char           aen_tail;