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-atapi.c b/drivers/ide/ide-atapi.c
index 1481f71f..89d2339 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -638,7 +638,6 @@
{
struct ide_atapi_pc *pc;
ide_hwif_t *hwif = drive->hwif;
- const struct ide_dma_ops *dma_ops = hwif->dma_ops;
ide_expiry_t *expiry = NULL;
struct request *rq = hwif->rq;
unsigned int timeout;
@@ -652,12 +651,8 @@
expiry = ide_cd_expiry;
timeout = ATAPI_WAIT_PC;
- if (drive->dma) {
- if (ide_build_sglist(drive, cmd))
- drive->dma = !dma_ops->dma_setup(drive, cmd);
- else
- drive->dma = 0;
- }
+ if (drive->dma)
+ drive->dma = !ide_dma_prepare(drive, cmd);
} else {
pc = drive->pc;
@@ -675,13 +670,8 @@
ide_dma_off(drive);
}
- if ((pc->flags & PC_FLAG_DMA_OK) &&
- (drive->dev_flags & IDE_DFLAG_USING_DMA)) {
- if (ide_build_sglist(drive, cmd))
- drive->dma = !dma_ops->dma_setup(drive, cmd);
- else
- drive->dma = 0;
- }
+ if (pc->flags & PC_FLAG_DMA_OK)
+ drive->dma = !ide_dma_prepare(drive, cmd);
if (!drive->dma)
pc->flags &= ~PC_FLAG_DMA_OK;
