diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c
index 887b492e4ad1..14a119b43bca 100644
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -2185,6 +2185,15 @@ static irqreturn_t allegro_irq_thread(int irq, void *data)
 {
 	struct allegro_dev *dev = data;
 
+	/*
+	 * The firmware is initialized after the mailbox is setup. We further
+	 * check the AL5_ITC_CPU_IRQ_STA register, if the firmware actually
+	 * triggered the interrupt. Although this should not happen, make sure
+	 * that we ignore interrupts, if the mailbox is not initialized.
+	 */
+	if (!dev->mbox_status)
+		return IRQ_NONE;
+
 	allegro_mbox_notify(dev->mbox_status);
 
 	return IRQ_HANDLED;