diff options
| author | Borislav Petkov <petkovbb@googlemail.com> | 2009-02-02 20:12:21 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-02-02 20:12:21 +0100 |
| commit | 9e772d0135a5b5f8355320be429efa339700d52d (patch) | |
| tree | 4c707a5a8b08d81fc62c29fd224b9901d79645a4 /drivers/ide/ide-io.c | |
| parent | Manually revert "mlock: downgrade mmap sem while populating mlocked regions" (diff) | |
| download | linux-9e772d0135a5b5f8355320be429efa339700d52d.tar.xz linux-9e772d0135a5b5f8355320be429efa339700d52d.zip | |
ide-cd: fix DMA for non bio-backed requests
This one fixes http://bugzilla.kernel.org/show_bug.cgi?id=12320.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-io.c')
| -rw-r--r-- | drivers/ide/ide-io.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index cc163319dfbd..9ee51adf567f 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -418,11 +418,14 @@ void ide_map_sg(ide_drive_t *drive, struct request *rq) ide_hwif_t *hwif = drive->hwif; struct scatterlist *sg = hwif->sg_table; - if (rq->cmd_type != REQ_TYPE_ATA_TASKFILE) { - hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg); - } else { + if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE); hwif->sg_nents = 1; + } else if (!rq->bio) { + sg_init_one(sg, rq->data, rq->data_len); + hwif->sg_nents = 1; + } else { + hwif->sg_nents = blk_rq_map_sg(drive->queue, rq, sg); } } |