2 files changed, 4 insertions, 0 deletions
diff --git a/sys/cam/cam_periph.h b/sys/cam/cam_periph.h
index 9f27180..88a709d 100644
--- a/sys/cam/cam_periph.h
+++ b/sys/cam/cam_periph.h
@@ -53,6 +53,8 @@ void periphdriver_register(void *);
 		case MOD_UNLOAD: \
 			printf(#name " module unload - not possible for this module type\n"); \
 			return EINVAL; \
+		default: \
+			return EOPNOTSUPP; \
 		} \
 		return 0; \
 	} \
diff --git a/sys/cam/cam_xpt.c b/sys/cam/cam_xpt.c
index 592809f..19116a1 100644
--- a/sys/cam/cam_xpt.c
+++ b/sys/cam/cam_xpt.c
@@ -1348,6 +1348,8 @@ cam_module_event_handler(module_t mod, int what, void *arg)
 		xpt_init(NULL);
 	} else if (what == MOD_UNLOAD) {
 		return EBUSY;
+	} else {
+		return EOPNOTSUPP;
 	}
 
 	return 0;