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-rw-r--r--drivers/ide/ide-atapi.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index d55784173a79..2e305714c209 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -544,6 +544,7 @@ 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;
u8 scsi = !!(drive->dev_flags & IDE_DFLAG_SCSI);
@@ -574,8 +575,14 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout,
if (!drive->dma)
pc->flags &= ~PC_FLAG_DMA_OK;
- ide_pktcmd_tf_load(drive, scsi ? 0 : IDE_TFLAG_OUT_DEVICE, bcount,
- drive->dma);
+ if (scsi)
+ tf_flags = 0;
+ else if (drive->media == ide_cdrom || drive->media == ide_optical)
+ 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 */
if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {