X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fscsi%2F3w-xxxx.c;h=e8e41e6eb42a91f5eb07fadb02135c9deadeeb39;hb=04d9c1a1100b6bdeffa7e1bfc30080bdac28e183;hp=283f6d25892b9c7d97dfd97fe3643ad12d7d0c47;hpb=b3ce1debe2685383a9ad6ace9c49869c3968c013;p=powerpc.git

diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 283f6d2589..e8e41e6eb4 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;
@@ -1507,10 +1508,12 @@ static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id,
 	struct scsi_cmnd *cmd = tw_dev->srb[request_id];
 	void *buf;
 	unsigned int transfer_len;
+	unsigned long flags = 0;
 
 	if (cmd->use_sg) {
 		struct scatterlist *sg =
 			(struct scatterlist *)cmd->request_buffer;
+		local_irq_save(flags);
 		buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
 		transfer_len = min(sg->length, len);
 	} else {
@@ -1525,6 +1528,7 @@ static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id,
 
 		sg = (struct scatterlist *)cmd->request_buffer;
 		kunmap_atomic(buf - sg->offset, KM_IRQ0);
+		local_irq_restore(flags);
 	}
 }