--- zzzz-none-000/linux-4.4.271/drivers/pci/pci-sysfs.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/drivers/pci/pci-sysfs.c	2023-04-19 10:22:29.000000000 +0000
@@ -324,8 +324,32 @@
 }
 static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store);
 
+#ifdef CONFIG_AVM_PCI_RECOVERY
+static ssize_t bus_down_store(struct bus_type *bus, const char *buf,
+				size_t count)
+{
+	ath_pci_down();
+
+	return count;
+}
+static BUS_ATTR(down, (S_IWUSR|S_IWGRP), NULL, bus_down_store);
+
+static ssize_t bus_up_store(struct bus_type *bus, const char *buf,
+				size_t count)
+{
+	ath_pci_up();
+
+	return count;
+}
+static BUS_ATTR(up, (S_IWUSR|S_IWGRP), NULL, bus_up_store);
+#endif
+
 static struct attribute *pci_bus_attrs[] = {
 	&bus_attr_rescan.attr,
+#ifdef CONFIG_AVM_PCI_RECOVERY
+	&bus_attr_down.attr,
+	&bus_attr_up.attr,
+#endif
 	NULL,
 };