diff --git a/sys/compat/linuxkpi/common/include/linux/pci.h b/sys/compat/linuxkpi/common/include/linux/pci.h
--- a/sys/compat/linuxkpi/common/include/linux/pci.h
+++ b/sys/compat/linuxkpi/common/include/linux/pci.h
@@ -523,7 +523,20 @@
 	if (pdev == pdev->bus->self) {
 		device_t bridge;
 
-		bridge = device_get_parent(pdev->dev.bsddev);
+		/*
+		 * In the case of DRM drivers, the passed device is a child of
+		 * `vgapci`. We want to start the lookup from `vgapci`, so the
+		 * parent of the passed `drmn`.
+		 *
+		 * We can use the `isdrm` flag to determine this.
+		 */
+		bridge = pdev->dev.bsddev;
+		if (pdev->pdrv != NULL && pdev->pdrv->isdrm)
+			bridge = device_get_parent(bridge);
+		if (bridge == NULL)
+			goto done;
+
+		bridge = device_get_parent(bridge);
 		if (bridge == NULL)
 			goto done;
 		bridge = device_get_parent(bridge);