greybus: interface: do not read DME during reactivation

[cascardo/linux.git] / drivers / staging / greybus / interface.c

diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c
index e21491b..9fe6764 100644 (file)
--- a/drivers/staging/greybus/interface.c
+++ b/drivers/staging/greybus/interface.c
@@ -95,6 +95,10 @@ static int gb_interface_read_dme(struct gb_interface *intf)
 {
        int ret;
 
+       /* DME attributes have already been read */
+       if (intf->dme_read)
+               return 0;
+
        ret = gb_interface_dme_attr_get(intf, DME_DDBL1_MANUFACTURERID,
                                        &intf->ddbl1_manufacturer_id);
        if (ret)
@@ -111,7 +115,13 @@ static int gb_interface_read_dme(struct gb_interface *intf)
                intf->quirks |= GB_INTERFACE_QUIRK_NO_INIT_STATUS;
        }
 
-       return gb_interface_read_ara_dme(intf);
+       ret = gb_interface_read_ara_dme(intf);
+       if (ret)
+               return ret;
+
+       intf->dme_read = true;
+
+       return 0;
 }
 
 static int gb_interface_route_create(struct gb_interface *intf)