1 files changed, 22 insertions, 7 deletions

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index c04110ba677f..f34b2ebee815 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -719,7 +719,8 @@ int usbnet_stop (struct net_device *net)
         dev->flags = 0;
         del_timer_sync (&dev->delay);
         tasklet_kill (&dev->bh);
-        if (info->manage_power)
+        if (info->manage_power &&
+            !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags))
                 info->manage_power(dev, 0);
         else
                 usb_autopm_put_interface(dev->intf);
@@ -794,14 +795,14 @@ int usbnet_open (struct net_device *net)
         tasklet_schedule (&dev->bh);
         if (info->manage_power) {
                 retval = info->manage_power(dev, 1);
-                if (retval < 0)
-                        goto done_manage_power_error;
-                usb_autopm_put_interface(dev->intf);
+                if (retval < 0) {
+                        retval = 0;
+                        set_bit(EVENT_NO_RUNTIME_PM, &dev->flags);
+                } else {
+                        usb_autopm_put_interface(dev->intf);
+                }
         }
         return retval;
-
-done_manage_power_error:
-        clear_bit(EVENT_DEV_OPEN, &dev->flags);
 done:
         usb_autopm_put_interface(dev->intf);
 done_nopm:
@@ -1447,6 +1448,10 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
                 if ((dev->driver_info->flags & FLAG_WWAN) != 0)
                         strcpy(net->name, "wwan%d");
 
+                /* devices that cannot do ARP */
+                if ((dev->driver_info->flags & FLAG_NOARP) != 0)
+                        net->flags |= IFF_NOARP;
+
                 /* maybe the remote can't receive an Ethernet MTU */
                 if (net->mtu > (dev->hard_mtu - net->hard_header_len))
                         net->mtu = dev->hard_mtu - net->hard_header_len;
@@ -1615,6 +1620,16 @@ void usbnet_device_suggests_idle(struct usbnet *dev)
 }
 EXPORT_SYMBOL(usbnet_device_suggests_idle);
 
+/*
+ * For devices that can do without special commands
+ */
+int usbnet_manage_power(struct usbnet *dev, int on)
+{
+        dev->intf->needs_remote_wakeup = on;
+        return 0;
+}
+EXPORT_SYMBOL(usbnet_manage_power);
+
 /*-------------------------------------------------------------------------*/
 static int __usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
                              u16 value, u16 index, void *data, u16 size)