--- zzzz-none-000/linux-2.6.39.4/arch/x86/pci/acpi.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/arch/x86/pci/acpi.c	2021-11-10 13:23:10.000000000 +0000
@@ -15,8 +15,16 @@
 	struct pci_bus *bus;
 	int busnum;
 };
-
+	/*
+	 * The following code is for Intel Media SOC SMP support. Since kernel can not get a correct ACPI data from CEFDK, 
+	 * thus by default we force to ignore host bridge windows from ACPI
+	 */
+#if defined(CONFIG_ARCH_GEN3) & defined(CONFIG_SMP)
+static bool pci_use_crs = false;
+#else
 static bool pci_use_crs = true;
+#endif
+
 
 static int __init set_use_crs(const struct dmi_system_id *id)
 {