diff options
| -rw-r--r-- | 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 33a15343e8b..b6e0aac6893 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 */ |