diff options
Diffstat (limited to 'drivers/scsi/libsas/sas_expander.c')
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 44 |
1 files changed, 35 insertions, 9 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index ffea620a147d..f77d72f01da9 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -614,7 +614,14 @@ int sas_smp_phy_control(struct domain_device *dev, int phy_id, } res = smp_execute_task(dev, pc_req, PC_REQ_SIZE, pc_resp,PC_RESP_SIZE); - + if (res) { + pr_err("ex %016llx phy%02d PHY control failed: %d\n", + SAS_ADDR(dev->sas_addr), phy_id, res); + } else if (pc_resp[2] != SMP_RESP_FUNC_ACC) { + pr_err("ex %016llx phy%02d PHY control failed: function result 0x%x\n", + SAS_ADDR(dev->sas_addr), phy_id, pc_resp[2]); + res = pc_resp[2]; + } kfree(pc_resp); kfree(pc_req); return res; @@ -817,6 +824,26 @@ static struct domain_device *sas_ex_discover_end_dev( #ifdef CONFIG_SCSI_SAS_ATA if ((phy->attached_tproto & SAS_PROTOCOL_STP) || phy->attached_sata_dev) { + if (child->linkrate > parent->min_linkrate) { + struct sas_phy_linkrates rates = { + .maximum_linkrate = parent->min_linkrate, + .minimum_linkrate = parent->min_linkrate, + }; + int ret; + + pr_notice("ex %016llx phy%02d SATA device linkrate > min pathway connection rate, attempting to lower device linkrate\n", + SAS_ADDR(child->sas_addr), phy_id); + ret = sas_smp_phy_control(parent, phy_id, + PHY_FUNC_LINK_RESET, &rates); + if (ret) { + pr_err("ex %016llx phy%02d SATA device could not set linkrate (%d)\n", + SAS_ADDR(child->sas_addr), phy_id, ret); + goto out_free; + } + pr_notice("ex %016llx phy%02d SATA device set linkrate successfully\n", + SAS_ADDR(child->sas_addr), phy_id); + child->linkrate = child->min_linkrate; + } res = sas_get_ata_info(child, phy); if (res) goto out_free; @@ -989,6 +1016,8 @@ static struct domain_device *sas_ex_discover_expander( list_del(&child->dev_list_node); spin_unlock_irq(&parent->port->dev_list_lock); sas_put_device(child); + sas_port_delete(phy->port); + phy->port = NULL; return NULL; } list_add_tail(&child->siblings, &parent->ex_dev.children); @@ -2058,14 +2087,11 @@ static int sas_rediscover_dev(struct domain_device *dev, int phy_id, bool last) return res; } - /* delete the old link */ - if (SAS_ADDR(phy->attached_sas_addr) && - SAS_ADDR(sas_addr) != SAS_ADDR(phy->attached_sas_addr)) { - SAS_DPRINTK("ex %016llx phy 0x%x replace %016llx\n", - SAS_ADDR(dev->sas_addr), phy_id, - SAS_ADDR(phy->attached_sas_addr)); - sas_unregister_devs_sas_addr(dev, phy_id, last); - } + /* we always have to delete the old device when we went here */ + SAS_DPRINTK("ex %016llx phy 0x%x replace %016llx\n", + SAS_ADDR(dev->sas_addr), phy_id, + SAS_ADDR(phy->attached_sas_addr)); + sas_unregister_devs_sas_addr(dev, phy_id, last); return sas_discover_new(dev, phy_id); } |