v4.19.13 snapshot.
diff --git a/arch/mips/pci/fixup-lantiq.c b/arch/mips/pci/fixup-lantiq.c
new file mode 100644
index 0000000..81530a1
--- /dev/null
+++ b/arch/mips/pci/fixup-lantiq.c
@@ -0,0 +1,29 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Copyright (C) 2012 John Crispin <john@phrozen.org>
+ */
+
+#include <linux/of_irq.h>
+#include <linux/of_pci.h>
+
+int (*ltq_pci_plat_arch_init)(struct pci_dev *dev) = NULL;
+int (*ltq_pci_plat_dev_init)(struct pci_dev *dev) = NULL;
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ if (ltq_pci_plat_arch_init)
+ return ltq_pci_plat_arch_init(dev);
+
+ if (ltq_pci_plat_dev_init)
+ return ltq_pci_plat_dev_init(dev);
+
+ return 0;
+}
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return of_irq_parse_and_map_pci(dev, slot, pin);
+}