diff --git a/mt7915/pci.c b/mt7915/pci.c
index 48290998..251856c4 100644
--- a/mt7915/pci.c
+++ b/mt7915/pci.c
@@ -103,11 +103,13 @@ static irqreturn_t mt7915_irq_handler(int irq, void *dev_instance)
 	intr &= dev->mt76.mmio.irqmask;
 	mt76_wr(dev, MT_INT_SOURCE_CSR, intr);
 
-	intr1 = mt76_rr(dev, MT_INT1_SOURCE_CSR);
-	intr1 &= dev->mt76.mmio.irqmask;
-	mt76_wr(dev, MT_INT1_SOURCE_CSR, intr1);
+	if (dev->hif2) {
+		intr1 = mt76_rr(dev, MT_INT1_SOURCE_CSR);
+		intr1 &= dev->mt76.mmio.irqmask;
+		mt76_wr(dev, MT_INT1_SOURCE_CSR, intr1);
 
-	intr |= intr1;
+		intr |= intr1;
+	}
 
 	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
 		return IRQ_NONE;
@@ -162,6 +164,8 @@ static void mt7915_pci_init_hif2(struct mt7915_dev *dev)
 
 	dev->hif2 = hif;
 
+	mt76_wr(dev, MT_INT1_MASK_CSR, 0);
+
 	if (devm_request_irq(dev->mt76.dev, hif->irq, mt7915_irq_handler,
 			     IRQF_SHARED, KBUILD_MODNAME "-hif", dev)) {
 		mt7915_put_hif2(hif);
@@ -245,7 +249,6 @@ static int mt7915_pci_probe(struct pci_dev *pdev,
 	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
 
 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
-	mt76_wr(dev, MT_INT1_MASK_CSR, 0);
 
 	/* master switch of PCIe tnterrupt enable */
 	mt7915_l1_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);