gc-linux-cvs

[Albert H. <he...@us...>]

Update of /cvsroot/gc-linux/linux/drivers/block/gcn-di
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv751/drivers/block/gcn-di

Modified Files:
	gcn-di.c 
Log Message:
Merge gc-linux-v2.6.31.


Index: gcn-di.c
===================================================================
RCS file: /cvsroot/gc-linux/linux/drivers/block/gcn-di/gcn-di.c,v
retrieving revision 1.25
retrieving revision 1.26
diff -C2 -d -r1.25 -r1.26
*** gcn-di.c	1 Feb 2009 18:29:35 -0000	1.25
--- gcn-di.c	25 Oct 2009 18:59:28 -0000	1.26
***************
*** 1822,1834 ****
  
  	spin_lock_irqsave(&ddev->lock, flags);
- 
  	req = ddev->req;
  	ddev->req = NULL;
- 
  	spin_unlock_irqrestore(&ddev->lock, flags);
  
  	if (req) {
- 		__blk_end_request(req, error, req->current_nr_sectors << 9);
  		spin_lock_irqsave(&ddev->queue_lock, flags);
  		blk_start_queue(ddev->queue);
  		spin_unlock_irqrestore(&ddev->queue_lock, flags);
--- 1822,1832 ----
  
  	spin_lock_irqsave(&ddev->lock, flags);
  	req = ddev->req;
  	ddev->req = NULL;
  	spin_unlock_irqrestore(&ddev->lock, flags);
  
  	if (req) {
  		spin_lock_irqsave(&ddev->queue_lock, flags);
+ 		__blk_end_request_cur(req, error);
  		blk_start_queue(ddev->queue);
  		spin_unlock_irqrestore(&ddev->queue_lock, flags);
***************
*** 1844,1861 ****
  	unsigned long flags;
  	size_t len;
  
! 	while ((req = elv_next_request(q))) {
! 		/* keep our reads within limits */
! 		if (req->sector + req->current_nr_sectors > ddev->nr_sectors) {
! 			drv_printk(KERN_ERR, "reading past end\n");
! 			end_request(req, 0);
! 			continue;
  		}
  
  		/* it doesn't make sense to write to this device */
  		if (rq_data_dir(req) == WRITE) {
  			drv_printk(KERN_ERR, "write attempted\n");
! 			end_request(req, 0);
! 			continue;
  		}
  
--- 1842,1869 ----
  	unsigned long flags;
  	size_t len;
+ 	int error;
  
! 	req = blk_peek_request(q);
! 	while (req) {
! 		spin_lock_irqsave(&ddev->lock, flags);
! 
! 		if (ddev->req || ddev->cmd) {
! 			blk_stop_queue(q);
! 			if (ddev->cmd)
! 				set_bit(__DI_START_QUEUE, &ddev->flags);
! 			spin_unlock_irqrestore(&ddev->lock, flags);
! 			break;
  		}
  
+ 		blk_start_request(req);
+ 		error = -EIO;
+ 
+ 		if (!blk_fs_request(req))
+ 			goto done;
+ 
  		/* it doesn't make sense to write to this device */
  		if (rq_data_dir(req) == WRITE) {
  			drv_printk(KERN_ERR, "write attempted\n");
! 			goto done;
  		}
  
***************
*** 1863,1898 ****
  		if ((ddev->flags & DI_MEDIA_CHANGED)) {
  			drv_printk(KERN_ERR, "media changed, aborting\n");
! 			end_request(req, 0);
! 			continue;
! 		}
! 
! 		spin_lock_irqsave(&ddev->lock, flags);
! 
! 		/* we can schedule just a single request each time */
! 		if (ddev->req || ddev->cmd) {
! 			blk_stop_queue(q);
! 			if (ddev->cmd)
! 				set_bit(__DI_START_QUEUE, &ddev->flags);
! 			spin_unlock_irqrestore(&ddev->lock, flags);
! 			break;
  		}
  
! 		blkdev_dequeue_request(req);
! 
! 		/* ignore requests that we can't handle */
! 		if (!blk_fs_request(req)) {
! 			spin_unlock_irqrestore(&ddev->lock, flags);
! 			continue;
  		}
  
- 		/* store the request being handled ... */
  		ddev->req = req;
- 		blk_stop_queue(q);
- 
  		spin_unlock_irqrestore(&ddev->lock, flags);
  
! 		/* ... and launch the corresponding read sector command */
! 		start = req->sector << KERNEL_SECTOR_SHIFT;
! 		len = req->current_nr_sectors << KERNEL_SECTOR_SHIFT;
  
  		di_op_readsector(cmd, ddev, start >> 2,
--- 1871,1890 ----
  		if ((ddev->flags & DI_MEDIA_CHANGED)) {
  			drv_printk(KERN_ERR, "media changed, aborting\n");
! 			goto done;
  		}
  
! 		/* keep our reads within limits */
! 		if (blk_rq_pos(req) +
! 				 blk_rq_cur_sectors(req) > ddev->nr_sectors) {
! 			drv_printk(KERN_ERR, "reading past end\n");
! 			goto done;
  		}
  
  		ddev->req = req;
  		spin_unlock_irqrestore(&ddev->lock, flags);
  
! 		/* launch the corresponding read sector command */
! 		start = blk_rq_pos(req) << KERNEL_SECTOR_SHIFT;
! 		len = blk_rq_cur_bytes(req);
  
  		di_op_readsector(cmd, ddev, start >> 2,
***************
*** 1901,1904 ****
--- 1893,1902 ----
  		cmd->done = di_request_done;
  		di_run_command(cmd);
+ 		error = 0;
+ 		break;
+ 	done:
+ 		spin_unlock_irqrestore(&ddev->lock, flags);
+ 		if (!__blk_end_request_cur(req, error))
+ 			req = blk_peek_request(q);
  	}
  }
***************
*** 2152,2156 ****
  	}
  
! 	blk_queue_hardsect_size(queue, DI_SECTOR_SIZE);
  	blk_queue_dma_alignment(queue, DI_DMA_ALIGN);
  	blk_queue_max_phys_segments(queue, 1);
--- 2150,2154 ----
  	}
  
! 	blk_queue_logical_block_size(queue, DI_SECTOR_SIZE);
  	blk_queue_dma_alignment(queue, DI_DMA_ALIGN);
  	blk_queue_max_phys_segments(queue, 1);