diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 090abe44382..21f8d61e587 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1272,9 +1272,20 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, tf.protocol = ATA_PROT_PIO; + /* presence detection using polling IDENTIFY? */ + if (flags & ATA_READID_DETECT) + tf.flags |= ATA_TFLAG_POLLING; + err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, id, sizeof(id[0]) * ATA_ID_WORDS); if (err_mask) { + if ((flags & ATA_READID_DETECT) && + (err_mask & AC_ERR_NODEV_HINT)) { + DPRINTK("ata%u.%d: NODEV after polling detection\n", + ap->id, dev->devno); + return -ENOENT; + } + rc = -EIO; reason = "I/O error"; goto err_out; @@ -4285,8 +4296,12 @@ fsm_start: /* device stops HSM for abort/error */ qc->err_mask |= AC_ERR_DEV; else - /* HSM violation. Let EH handle this */ - qc->err_mask |= AC_ERR_HSM; + /* HSM violation. Let EH handle this. + * Phantom devices also trigger this + * condition. Mark hint. + */ + qc->err_mask |= AC_ERR_HSM | + AC_ERR_NODEV_HINT; ap->hsm_task_state = HSM_ST_ERR; goto fsm_start; |