diff options
| author | David S. Miller <davem@davemloft.net> | 2008-07-05 23:08:07 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-05 23:08:07 -0700 |
| commit | ea2aca084ba82aaf7c148d04914ceed8758ce08a (patch) | |
| tree | dcb3f4f849cf48deac2dd3bafd5c2cd2f0e7dc79 /drivers/ata/libata-scsi.c | |
| parent | f3032be921cd126615ce3bfd7084e3d319f3f892 (diff) | |
| parent | c5a78ac00c400df29645e59938700301efb371d0 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/net/wan/hdlc_fr.c
drivers/net/wireless/iwlwifi/iwl-4965.c
drivers/net/wireless/iwlwifi/iwl3945-base.c
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 2e6e1622dc6..57a43649a46 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; |