diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 69a312f..faa8d57 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -740,7 +740,7 @@
 
 	if (max_outstanding_req_per_channel <
 	    STORVSC_MAX_IO_REQUESTS)
-		return -1;
+		return -EINVAL;
 
 	return vmbus_driver_register(&storvsc_drv);
 }