diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c
index e067671b3ce2e..0980c773cb5b1 100644
--- a/drivers/i2c/busses/i2c-hisi.c
+++ b/drivers/i2c/busses/i2c-hisi.c
@@ -330,6 +330,14 @@ static irqreturn_t hisi_i2c_irq(int irq, void *context)
 	struct hisi_i2c_controller *ctlr = context;
 	u32 int_stat;
 
+	/*
+	 * Don't handle the interrupt if cltr->completion is NULL. We may
+	 * reach here because the interrupt is spurious or the transfer is
+	 * started by another port (e.g. firmware) rather than us.
+	 */
+	if (!ctlr->completion)
+		return IRQ_NONE;
+
 	int_stat = readl(ctlr->iobase + HISI_I2C_INT_MSTAT);
 	hisi_i2c_clear_int(ctlr, int_stat);
 	if (!(int_stat & HISI_I2C_INT_ALL))