[SCSI] libsas: sas_rediscover_dev did not look at the SMP exec status.
The discovery function "sas_rediscover_dev" had two bugs: 1) it did
not pay attention to the return status from the SMP task execution;
2) the stack variable used for the returned SAS address was compared
against 0 without being initialized.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index caa0525..af659cc 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -2005,6 +2005,7 @@
u8 sas_addr[8];
int res;
+ memset(sas_addr, 0, 8);
res = sas_get_phy_attached_dev(dev, phy_id, sas_addr, &type);
switch (res) {
case SMP_RESP_NO_PHY:
@@ -2017,9 +2018,13 @@
return res;
case SMP_RESP_FUNC_ACC:
break;
+ case -ECOMM:
+ break;
+ default:
+ return res;
}
- if (SAS_ADDR(sas_addr) == 0) {
+ if ((SAS_ADDR(sas_addr) == 0) || (res == -ECOMM)) {
phy->phy_state = PHY_EMPTY;
sas_unregister_devs_sas_addr(dev, phy_id, last);
return res;