diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-14 11:58:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-14 11:58:10 -0700 |
| commit | 6d71135d635f84b584df55096627ed750c069e61 (patch) | |
| tree | 0dd88dc78141540b37bfc7ce1b7088488af227e6 | |
| parent | 1d885526f2f3fffacee2ecb541270bd00168adff (diff) | |
| parent | 5d82720a7f41f0c877e026c7d17e3bf20ccdbae0 (diff) | |
| download | linux-hpc-6d71135d635f84b584df55096627ed750c069e61.tar.gz | |
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
| -rw-r--r-- | drivers/ide/ide-atapi.c | 12 | ||||
| -rw-r--r-- | drivers/ide/ide-dma.c | 12 | ||||
| -rw-r--r-- | drivers/ide/ide-floppy.c | 6 | ||||
| -rw-r--r-- | include/linux/ide.h | 1 |
4 files changed, 26 insertions, 5 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index e96c0126059827..e9d042dba0e075 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -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; diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c index 72ebab0bc75557..059c90bb5ad2f4 100644 --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -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); diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 3eab1c6c9b3149..317ec62c33d424 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -327,8 +327,10 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, return ide_stopped; } - ide_init_sg_cmd(drive, rq); - ide_map_sg(drive, rq); + 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; diff --git a/include/linux/ide.h b/include/linux/ide.h index e0cedfe9fad46b..25087aead65768 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -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) */ |