ide: pass command to ide_map_sg()

* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
  commands.

* Pass command to ->dma_setup method and update all its
  implementations accordingly.

* Pass command instead of request to ide_build_sglist(),
  *_build_dmatable() and ide_map_sg().

While at it:

* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.

* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
  change return value type to 'int' and drop unused 'ddir'
  argument.

* Do some minor cleanups in [tx4939]ide_dma_setup().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index db6d7821e45b..3b23bd11945e 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -102,8 +102,8 @@ ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
                 return ide_started;
         default:
                 if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
-                    ide_build_sglist(drive, hwif->rq) == 0 ||
-                    dma_ops->dma_setup(drive))
+                    ide_build_sglist(drive, cmd) == 0 ||
+                    dma_ops->dma_setup(drive, cmd))
                         return ide_stopped;
                 dma_ops->dma_exec_cmd(drive, tf->command);
                 dma_ops->dma_start(drive);