tree 5bd6ac777d32d8426e65e3c31cc1587674771e8c
parent 9ef5791e1be91007951477b8ed1530ac1166a8e7
author Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> 1171676426 +0100
committer Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> 1171676426 +0100

ide: add ide_set_dma() helper (v2)

* add ide_set_dma() helper and make ide_hwif_t.ide_dma_check return
  -1 when DMA needs to be disabled (== need to call ->ide_dma_off_quietly)
   0 when DMA needs to be enabled  (== need to call ->ide_dma_on)
   1 when DMA setting shouldn't be changed
* fix IDE code to use ide_set_dma() instead if using ->ide_dma_check directly

v2:
* updated for scc_pata

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>