From: Changyuan Lyu <changyuanl@xxxxxxxxxx>
This patch adds a fatal error check for the pm8001_phy_control() function.
Signed-off-by: Changyuan Lyu <changyuanl@xxxxxxxxxx>
Signed-off-by: Pranav Prasad <pranavpp@xxxxxxxxxx>
---
drivers/scsi/pm8001/pm8001_sas.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index e5673c774f66..b153f0966e5d 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -167,6 +167,16 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
pm8001_ha = sas_phy->ha->lldd_ha;
phy = &pm8001_ha->phy[phy_id];
pm8001_ha->phy[phy_id].enable_completion = &completion;
+
+ if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) {
+ /* If the controller is in fatal error state,
+ * we will not get a response from the controller
+ */
+ pm8001_dbg(pm8001_ha, FAIL,
+ "Phy control failed due to fatal errors\n");
+ return -EFAULT;
+ }
+
switch (func) {
case PHY_FUNC_SET_LINK_RATE:
rates = funcdata;
--
2.40.1.698.g37aff9b760-goog
