diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:36:55 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-25 12:36:55 +0200 |
| commit | f6477cc76c73833a56e97f1fafc36a7ca92927e5 (patch) | |
| tree | 9b4ca3d9fa63ea001d516834c8b2707094f3f711 /drivers/ata/libata-scsi.c | |
| parent | fd2c17e1777d46cff14c25ea774a4d17459d188a (diff) | |
| parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) | |
Merge branch 'linus' into x86/timerstip-x86-timers-2008-06-25_10.37_Wed
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 2e6e1622dc6d..57a43649a461 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2343,8 +2343,8 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc) { struct scsi_cmnd *scmd = qc->scsicmd; struct ata_device *dev = qc->dev; - int using_pio = (dev->flags & ATA_DFLAG_PIO); int nodata = (scmd->sc_data_direction == DMA_NONE); + int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); unsigned int nbytes; memset(qc->cdb, 0, dev->cdb_len); @@ -2362,7 +2362,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc) ata_qc_set_pc_nbytes(qc); /* check whether ATAPI DMA is safe */ - if (!using_pio && ata_check_atapi_dma(qc)) + if (!nodata && !using_pio && atapi_check_dma(qc)) using_pio = 1; /* Some controller variants snoop this value for Packet @@ -2402,13 +2402,11 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc) qc->tf.lbam = (nbytes & 0xFF); qc->tf.lbah = (nbytes >> 8); - if (using_pio || nodata) { - /* no data, or PIO data xfer */ - if (nodata) - qc->tf.protocol = ATAPI_PROT_NODATA; - else - qc->tf.protocol = ATAPI_PROT_PIO; - } else { + if (nodata) + qc->tf.protocol = ATAPI_PROT_NODATA; + else if (using_pio) + qc->tf.protocol = ATAPI_PROT_PIO; + else { /* DMA data xfer */ qc->tf.protocol = ATAPI_PROT_DMA; qc->tf.feature |= ATAPI_PKT_DMA; |