diff options
| -rw-r--r-- | drivers/scsi/ahci.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/libata-core.c | 4 | ||||
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/libata.h | 1 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 |
5 files changed, 13 insertions, 5 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 0c5f0c844d2..ff48066d4c4 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -549,6 +549,12 @@ static int ahci_softreset(struct ata_port *ap, int verbose, unsigned int *class) DPRINTK("ENTER\n"); + if (!sata_dev_present(ap)) { + DPRINTK("PHY reports no device\n"); + *class = ATA_DEV_NONE; + return 0; + } + /* prepare for SRST (AHCI-1.1 10.4.1) */ rc = ahci_stop_engine(ap); if (rc) { diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 57b3240ee86..2b2feb6462a 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -76,6 +76,10 @@ int atapi_enabled = 1; module_param(atapi_enabled, int, 0444); MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)"); +int atapi_dmadir = 0; +module_param(atapi_dmadir, int, 0444); +MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)"); + int libata_fua = 0; module_param_named(fua, libata_fua, int, 0444); MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)"); diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 745fc263fee..c9c00149029 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -2163,11 +2163,9 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd) qc->tf.protocol = ATA_PROT_ATAPI_DMA; qc->tf.feature |= ATAPI_PKT_DMA; -#ifdef ATAPI_ENABLE_DMADIR - /* some SATA bridges need us to indicate data xfer direction */ - if (cmd->sc_data_direction != DMA_TO_DEVICE) + if (atapi_dmadir && (cmd->sc_data_direction != DMA_TO_DEVICE)) + /* some SATA bridges need us to indicate data xfer direction */ qc->tf.feature |= ATAPI_DMADIR; -#endif } qc->nbytes = cmd->bufflen; diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index e3bd1ddb538..652c08e3808 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -41,6 +41,7 @@ struct ata_scsi_args { /* libata-core.c */ extern int atapi_enabled; +extern int atapi_dmadir; extern int libata_fua; extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap, struct ata_device *dev); diff --git a/include/linux/libata.h b/include/linux/libata.h index cc6cc08e801..44d074ff778 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -44,7 +44,6 @@ #undef ATA_NDEBUG /* define to disable quick runtime checks */ #undef ATA_ENABLE_PATA /* define to enable PATA support in some * low-level drivers */ -#undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */ /* note: prints function name for you */ |