diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index df483adc3f7..425ab1493fd 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -2943,6 +2943,14 @@ static int ata_dma_blacklisted(const struct ata_device *dev) unsigned int nlen, rlen; int i; + /* We don't support polling DMA. + * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) + * if the LLDD handles only interrupts in the HSM_ST_LAST state. + */ + if ((dev->ap->flags & ATA_FLAG_PIO_POLLING) && + (dev->flags & ATA_DFLAG_CDB_INTR)) + return 1; + ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num)); ata_id_string(dev->id, model_rev, ATA_ID_FW_REV_OFS, @@ -3235,15 +3243,6 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc) if (ap->ops->check_atapi_dma) rc = ap->ops->check_atapi_dma(qc); - /* We don't support polling DMA. - * Use PIO if the LLDD handles only interrupts in - * the HSM_ST_LAST state and the ATAPI device - * generates CDB interrupts. - */ - if ((ap->flags & ATA_FLAG_PIO_POLLING) && - (qc->dev->flags & ATA_DFLAG_CDB_INTR)) - rc = 1; - return rc; } /** @@ -4551,7 +4550,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) break; case ATA_PROT_ATAPI_DMA: if (qc->dev->flags & ATA_DFLAG_CDB_INTR) - /* see ata_check_atapi_dma() */ + /* see ata_dma_blacklisted() */ BUG(); break; default: |