um: vector: Fix NAPI budget handling

Fix the handling of NAPI budget.

Signed-off-by: Anton Ivanov <[e-mail]>
Signed-off-by: Richard Weinberger <[e-mail]>

arch/um/drivers/vector_kern.c

···
 		budget = qi->max_depth;
 
 	packet_count = uml_vector_recvmmsg(
-		vp->fds->rx_fd, qi->mmsg_vector, qi->max_depth, 0);
+		vp->fds->rx_fd, qi->mmsg_vector, budget, 0);
 
 	if (packet_count < 0)
 		vp->in_error = true;
···
 
 	if (tx_enqueued || err > 0)
 		napi_schedule(napi);
-	if (work_done < budget)
+	if (work_done <= budget)
 		napi_complete_done(napi, work_done);
 	return work_done;
 }