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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-15 21:21:58 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-15 21:21:58 +0200 |
| commit | 4cc196897de9e6c02cf86debc5b9f7cf1b69a214 (patch) | |
| tree | 70aebe4c447f6ce48ff10909779382000fd8b6da | |
| parent | 594c16d8dd54cd7b1c5ef1ec3ac0f6bf34301dad (diff) | |
| download | linux-3.10-4cc196897de9e6c02cf86debc5b9f7cf1b69a214.tar.gz linux-3.10-4cc196897de9e6c02cf86debc5b9f7cf1b69a214.tar.bz2 linux-3.10-4cc196897de9e6c02cf86debc5b9f7cf1b69a214.zip | |
ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc()
Move idescsi_map_sg() call out from idescsi_issue_pc()
to idescsi_do_request() as a preparation to adding generic
ide_issue_pc() helper.
There should be no functional changes caused by this patch.
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| -rw-r--r-- | drivers/scsi/ide-scsi.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index d41348f2245..1d261298d61 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -514,16 +514,16 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, /* Request to transfer the entire buffer at once */ bcount = min(pc->req_xfer, 63 * 1024); - if (drive->using_dma && !idescsi_map_sg(drive, pc)) { + if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) { hwif->sg_mapped = 1; dma = !hwif->dma_ops->dma_setup(drive); hwif->sg_mapped = 0; } - ide_pktcmd_tf_load(drive, 0, bcount, dma); + if (!dma) + pc->flags &= ~PC_FLAG_DMA_OK; - if (dma) - pc->flags |= PC_FLAG_DMA_OK; + ide_pktcmd_tf_load(drive, 0, bcount, dma); if (test_bit(IDESCSI_DRQ_INTERRUPT, &scsi->flags)) { ide_execute_command(drive, WIN_PACKETCMD, &idescsi_transfer_pc, @@ -547,8 +547,12 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r rq->sector, rq->nr_sectors, rq->current_nr_sectors); if (blk_sense_request(rq) || blk_special_request(rq)) { - return idescsi_issue_pc(drive, - (struct ide_atapi_pc *) rq->special); + struct ide_atapi_pc *pc = (struct ide_atapi_pc *)rq->special; + + if (drive->using_dma && !idescsi_map_sg(drive, pc)) + pc->flags |= PC_FLAG_DMA_OK; + + return idescsi_issue_pc(drive, pc); } blk_dump_rq_flags(rq, "ide-scsi: unsup command"); idescsi_end_request (drive, 0, 0); |