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-rw-r--r--drivers/scsi/libsas/sas_expander.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index d9b9a008d36d..dc70c180e115 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -678,6 +678,29 @@ static struct domain_device *sas_ex_discover_end_dev(
return NULL;
}
+/* See if this phy is part of a wide port */
+static int sas_ex_join_wide_port(struct domain_device *parent, int phy_id)
+{
+ struct ex_phy *phy = &parent->ex_dev.ex_phy[phy_id];
+ int i;
+
+ for (i = 0; i < parent->ex_dev.num_phys; i++) {
+ struct ex_phy *ephy = &parent->ex_dev.ex_phy[i];
+
+ if (ephy == phy)
+ continue;
+
+ if (!memcmp(phy->attached_sas_addr, ephy->attached_sas_addr,
+ SAS_ADDR_SIZE) && ephy->port) {
+ sas_port_add_phy(ephy->port, phy->phy);
+ phy->phy_state = PHY_DEVICE_DISCOVERED;
+ return 0;
+ }
+ }
+
+ return -ENODEV;
+}
+
static struct domain_device *sas_ex_discover_expander(
struct domain_device *parent, int phy_id)
{
@@ -810,6 +833,13 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
return res;
}
+ res = sas_ex_join_wide_port(dev, phy_id);
+ if (!res) {
+ SAS_DPRINTK("Attaching ex phy%d to wide port %016llx\n",
+ phy_id, SAS_ADDR(ex_phy->attached_sas_addr));
+ return res;
+ }
+
switch (ex_phy->attached_dev_type) {
case SAS_END_DEV:
child = sas_ex_discover_end_dev(dev, phy_id);