ide: add ide_dma_prepare() helper
* Add ide_dma_prepare() helper.
* Convert ide_issue_pc() and do_rw_taskfile() to use it.
* Make ide_build_sglist() static.
There should be no functional changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index a3b7a50..dba68db 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -100,9 +100,7 @@
ide_execute_command(drive, cmd, handler, WAIT_WORSTCASE);
return ide_started;
case ATA_PROT_DMA:
- if ((drive->dev_flags & IDE_DFLAG_USING_DMA) == 0 ||
- ide_build_sglist(drive, cmd) == 0 ||
- dma_ops->dma_setup(drive, cmd))
+ if (ide_dma_prepare(drive, cmd))
return ide_stopped;
hwif->expiry = dma_ops->dma_timer_expiry;
ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD);
