From 92f64f63373a948afc27b1e45d6f8681bcd135eb Mon Sep 17 00:00:00 2001
From: Daniil <82492303+daniilfigasystems@users.noreply.github.com>
Date: Wed, 27 Mar 2024 09:23:56 +0900
Subject: [PATCH] Update iommu.c

---
 drivers/iommu/intel/iommu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 50eb9aed47cc58..59be874a38b81c 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -570,6 +570,9 @@ is_downstream_to_pci_bridge(struct device *dev, struct device *bridge)
 {
 	struct pci_dev *pdev, *pbridge;
 
+	if (!dev)
+		return false
+
 	if (!dev_is_pci(dev) || !dev_is_pci(bridge))
 		return false;