There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@xxxxxxxxx>
---
drivers/ide/ide-atapi.c | 23 +++++++++++------------
1 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 33a1534..b6e0aac 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -551,18 +551,24 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
struct ide_atapi_pc *pc = drive->pc;
ide_hwif_t *hwif = drive->hwif;
u32 tf_flags;
- u16 bcount;
+ u16 bcount = 0;
u8 scsi = !!(drive->dev_flags & IDE_DFLAG_SCSI);
/* We haven't transferred any data yet */
pc->xferred = 0;
pc->cur_pos = pc->buf;
- /* Request to transfer the entire buffer at once */
- if (drive->media == ide_tape && scsi == 0)
- bcount = pc->req_xfer;
- else
+ if (dev_is_idecd(drive)) {
+ tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL;
+ } else if (scsi) {
+ tf_flags = 0;
bcount = min(pc->req_xfer, 63 * 1024);
+ } else {
+ 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;
@@ -581,13 +587,6 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
if (!drive->dma)
pc->flags &= ~PC_FLAG_DMA_OK;
- if (scsi)
- tf_flags = 0;
- else if (dev_is_idecd(drive))
- tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL;
- else
- tf_flags = IDE_TFLAG_OUT_DEVICE;
-
ide_pktcmd_tf_load(drive, tf_flags, bcount, drive->dma);
/* Issue the packet command */
--
1.6.0.4
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