There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
---
drivers/ide/ide-atapi.c | 36 ++++++++++++++++++++----------------
1 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 5295b26..2577782 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -565,39 +565,43 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout)
{
- struct ide_atapi_pc *pc = drive->pc;
+ struct ide_atapi_pc *pc;
ide_hwif_t *hwif = drive->hwif;
ide_expiry_t *expiry = NULL;
u32 tf_flags;
u16 bcount;
- /* We haven't transferred any data yet */
- pc->xferred = 0;
- pc->cur_pos = pc->buf;
-
if (dev_is_idecd(drive)) {
tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL;
bcount = ide_cd_get_xferlen(hwif->hwgroup->rq);
expiry = ide_cd_expiry;
+
+ if (drive->dma)
+ drive->dma = !hwif->dma_ops->dma_setup(drive);
} else {
+ pc = drive->pc;
+
+ /* We haven't transferred any data yet */
+ pc->xferred = 0;
+ pc->cur_pos = pc->buf;
+
tf_flags = IDE_TFLAG_OUT_DEVICE;
bcount = ((drive->media == ide_tape) ?
pc->req_xfer :
min(pc->req_xfer, 63 * 1024));
- }
- if (pc->flags & PC_FLAG_DMA_ERROR) {
- pc->flags &= ~PC_FLAG_DMA_ERROR;
- ide_dma_off(drive);
- }
+ if (pc->flags & PC_FLAG_DMA_ERROR) {
+ pc->flags &= ~PC_FLAG_DMA_ERROR;
+ ide_dma_off(drive);
+ }
- if (((pc->flags & PC_FLAG_DMA_OK) &&
- (drive->dev_flags & IDE_DFLAG_USING_DMA)) ||
- drive->dma)
- drive->dma = !hwif->dma_ops->dma_setup(drive);
+ if ((pc->flags & PC_FLAG_DMA_OK) &&
+ (drive->dev_flags & IDE_DFLAG_USING_DMA))
+ drive->dma = !hwif->dma_ops->dma_setup(drive);
- if (!drive->dma)
- pc->flags &= ~PC_FLAG_DMA_OK;
+ if (!drive->dma)
+ pc->flags &= ~PC_FLAG_DMA_OK;
+ }
ide_pktcmd_tf_load(drive, tf_flags, bcount, drive->dma);
--
1.6.0.4
--
