@@ -245,6 +245,8 @@ static int eem_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
* - response complete: suggest N sec polling
*/
case 2: /* Suspend hint */
+ usbnet_notify_idle(dev);
+ continue;
case 3: /* Response hint */
case 4: /* Response complete hint */
continue;
@@ -1201,6 +1201,24 @@ static void usbnet_bh (unsigned long param)
}
}
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Some devices notify the host of an idle condition
+ * this makes use of this information
+ */
+
+void usbnet_notify_idle(struct usbnet *dev)
+{
+ int r;
+
+ if (!test_and_set_bit(EVENT_REP_IDLE, &dev->flags)) {
+ r = usb_autopm_get_interface_async(dev->intf);
+ if (r < 0)
+ clear_bit(EVENT_REP_IDLE, &dev->flags);
+ }
+}
+EXPORT_SYMBOL_GPL(usbnet_notify_idle);
/*-------------------------------------------------------------------------
*
@@ -1495,6 +1513,8 @@ int usbnet_resume (struct usb_interface *intf)
spin_unlock_irq(&dev->txq.lock);
if (!(dev->txq.qlen >= TX_QLEN(dev)))
netif_start_queue(dev->net);
+ if (test_and_clear_bit(EVENT_REP_IDLE, &dev->flags))
+ usb_autopm_get_interface_no_resume(intf);
tasklet_schedule (&dev->bh);
}
return 0;
@@ -68,6 +68,7 @@ struct usbnet {
# define EVENT_RX_PAUSED 5
# define EVENT_DEV_WAKING 6
# define EVENT_DEV_ASLEEP 7
+# define EVENT_REP_IDLE 8
};
static inline struct usb_driver *driver_of(struct usb_interface *intf)
@@ -205,6 +206,7 @@ extern void usbnet_unlink_rx_urbs(struct usbnet *);
extern void usbnet_pause_rx(struct usbnet *);
extern void usbnet_resume_rx(struct usbnet *);
extern void usbnet_purge_paused_rxq(struct usbnet *);
+extern void usbnet_notify_idle(struct usbnet *);
extern int usbnet_get_settings(struct net_device *net,
struct ethtool_cmd *cmd);