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, 5 insertions, 1 deletions

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 8c518c6a6477..ee3e77a7a727 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -285,9 +285,13 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
                 goto out_end;
         }
 
+        if (rq_data_dir(rq))
+                cmd->tf_flags |= IDE_TFLAG_WRITE;
+        cmd->rq = rq;
+
         if (blk_fs_request(rq) || pc->req_xfer) {
                 ide_init_sg_cmd(cmd, rq->nr_sectors);
-                ide_map_sg(drive, rq);
+                ide_map_sg(drive, cmd);
         }
 
         pc->sg = hwif->sg_table;