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Commit 6d71135d authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide: save the returned value of dma_map_sg
  ide-floppy: do not map dataless cmds to an sg
parents 1d885526 5d82720a

drivers/ide/ide-atapi.c

+12 −0
Original line number Diff line number Diff line
@@ -140,6 +140,12 @@ static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk, 
	rq->cmd_flags |= REQ_PREEMPT;

	rq->buffer = (char *)pc;

	rq->rq_disk = disk;



	if (pc->req_xfer) {

		rq->data = pc->buf;

		rq->data_len = pc->req_xfer;

	}



	memcpy(rq->cmd, pc->c, 12);

	if (drive->media == ide_tape)

		rq->cmd[13] = REQ_IDETAPE_PC1;
@@ -159,6 +165,12 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk, 
	rq = blk_get_request(drive->queue, READ, __GFP_WAIT);

	rq->cmd_type = REQ_TYPE_SPECIAL;

	rq->buffer = (char *)pc;



	if (pc->req_xfer) {

		rq->data = pc->buf;

		rq->data_len = pc->req_xfer;

	}



	memcpy(rq->cmd, pc->c, 12);

	if (drive->media == ide_tape)

		rq->cmd[13] = REQ_IDETAPE_PC1;

drivers/ide/ide-dma.c

+9 −3
Original line number Diff line number Diff line
@@ -128,6 +128,7 @@ int ide_build_sglist(ide_drive_t *drive, struct request *rq) 
{

	ide_hwif_t *hwif = drive->hwif;

	struct scatterlist *sg = hwif->sg_table;

	int i;



	ide_map_sg(drive, rq);
@@ -136,8 +137,13 @@ int ide_build_sglist(ide_drive_t *drive, struct request *rq) 
	else

		hwif->sg_dma_direction = DMA_TO_DEVICE;



	return dma_map_sg(hwif->dev, sg, hwif->sg_nents,

			  hwif->sg_dma_direction);

	i = dma_map_sg(hwif->dev, sg, hwif->sg_nents, hwif->sg_dma_direction);

	if (i) {

		hwif->orig_sg_nents = hwif->sg_nents;

		hwif->sg_nents = i;

	}



	return i;

}

EXPORT_SYMBOL_GPL(ide_build_sglist);
@@ -156,7 +162,7 @@ void ide_destroy_dmatable(ide_drive_t *drive) 
{

	ide_hwif_t *hwif = drive->hwif;



	dma_unmap_sg(hwif->dev, hwif->sg_table, hwif->sg_nents,

	dma_unmap_sg(hwif->dev, hwif->sg_table, hwif->orig_sg_nents,

		     hwif->sg_dma_direction);

}

EXPORT_SYMBOL_GPL(ide_destroy_dmatable);

drivers/ide/ide-floppy.c

+4 −2
Original line number Diff line number Diff line
@@ -327,8 +327,10 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, 
		return ide_stopped;

	}



	if (blk_fs_request(rq) || pc->req_xfer) {

		ide_init_sg_cmd(drive, rq);

		ide_map_sg(drive, rq);

	}



	pc->sg = hwif->sg_table;

	pc->sg_cnt = hwif->sg_nents;

include/linux/ide.h

+1 −0
Original line number Diff line number Diff line
@@ -797,6 +797,7 @@ typedef struct hwif_s { 
	struct scatterlist *sg_table;

	int sg_max_nents;		/* Maximum number of entries in it */

	int sg_nents;			/* Current number of entries in it */

	int orig_sg_nents;

	int sg_dma_direction;		/* dma transfer direction */



	/* data phase of the active command (currently only valid for PIO/DMA) */