Re: [PATCH net-next v10 1/5] net: rnpgbe: Add interrupt handling

On Mon, 31 Aug 2026 15:36:04 +0800 Dong Yibo wrote:

+/**
+ * rnpgbe_int_single - MSI-X single-vector/MSI interrupt handler
+ * @irq: interrupt number
+ * @data: private data
+ *
+ * Return: IRQ_HANDLED
+ **/
+static irqreturn_t rnpgbe_int_single(int irq, void *data)
+{
+	struct mucse *mucse = (struct mucse *)data;
+	struct mucse_q_vector *q_vector;
+
+	queue_work(system_percpu_wq, &mucse->mbx_work);
+
+	if (test_bit(__MUCSE_DOWN, &mucse->state))
+		return IRQ_HANDLED;
+
+	q_vector = mucse->q_vector[0];
+	rnpgbe_irq_disable_queues(q_vector);
+	napi_schedule_irqoff(&q_vector->napi);
+
+	return IRQ_HANDLED;
+}

It's not reasonable to have a single IRQ handle datapath and also
unconditionally queue a mbox work item. Just require at least 2 IRQs.