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Subject[PATCH 29/40] 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>
---
drivers/scsi/ide-scsi.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)

Index: b/drivers/scsi/ide-scsi.c
===================================================================
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -514,16 +514,16 @@ static ide_startstop_t idescsi_issue_pc(
/* 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_reques
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);

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