1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index f77b329f6923..78734e25edd5 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1701,6 +1701,11 @@ mptsas_sas_expander_pg0(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info,
         if (error)
                 goto out_free_consistent;
 
+        if (!buffer->NumPhys) {
+                error = -ENODEV;
+                goto out_free_consistent;
+        }
+
         /* save config data */
         port_info->num_phys = buffer->NumPhys;
         port_info->phy_info = kcalloc(port_info->num_phys,