ide-atapi: start dma in a drive-specific way
There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index c9beda5..e8688c0 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -489,7 +489,7 @@
static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
{
- struct ide_atapi_pc *pc = drive->pc;
+ struct ide_atapi_pc *uninitialized_var(pc);
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->hwgroup->rq;
ide_expiry_t *expiry;
@@ -518,6 +518,8 @@
timeout = rq->timeout;
expiry = ide_cd_expiry;
} else {
+ pc = drive->pc;
+
cmd_len = ATAPI_MIN_CDB_BYTES;
/*
@@ -550,9 +552,14 @@
ide_set_handler(drive, ide_pc_intr, timeout, expiry);
/* Begin DMA, if necessary */
- if (pc->flags & PC_FLAG_DMA_OK) {
- pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
- hwif->dma_ops->dma_start(drive);
+ if (dev_is_idecd(drive)) {
+ if (drive->dma)
+ hwif->dma_ops->dma_start(drive);
+ } else {
+ if (pc->flags & PC_FLAG_DMA_OK) {
+ pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
+ hwif->dma_ops->dma_start(drive);
+ }
}
/* Send the actual packet */