[PATCH] usb suspend updates (interface suspend)

This is the first of a few installments of PM API updates to match the
recent switch to "pm_message_t".  This installment primarily affects
USB device drivers (for USB interfaces), and it changes the handful of
drivers which currently implement suspend methods:

    - <linux/usb.h> and usbcore, signature change

    - Some drivers only changed the signature, net effect this just
      shuts up "sparse -Wbitwise":
	* hid-core
	* stir4200

    - Two network drivers did that, and also grew slightly more
      featureful suspend code ... they now properly shut down
      their activities.  (As should stir4200...)
	* pegasus
	* usbnet

Note that the Wake-On-Lan (WOL) support in pegasus doesn't yet work; looks
to me like it's missing a request to turn it on, vs just configuring it.
The ASIX code in usbnet also has WOL hooks that are ready to use; untested.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Index: gregkh-2.6/drivers/net/irda/stir4200.c
===================================================================

2 files changed, 30 insertions, 2 deletions

diff --git a/drivers/usb/net/pegasus.c b/drivers/usb/net/pegasus.c
index f6c19d73b7d..a02be795d63 100644
--- a/drivers/usb/net/pegasus.c
+++ b/drivers/usb/net/pegasus.c
@@ -1364,11 +1364,18 @@ static void pegasus_disconnect(struct usb_interface *intf)
 	free_netdev(pegasus->net);
 }
 
-static int pegasus_suspend (struct usb_interface *intf, pm_message_t state)
+static int pegasus_suspend (struct usb_interface *intf, pm_message_t message)
 {
 	struct pegasus *pegasus = usb_get_intfdata(intf);
 	
 	netif_device_detach (pegasus->net);
+	if (netif_running(pegasus->net)) {
+		cancel_delayed_work(&pegasus->carrier_check);
+
+		usb_kill_urb(pegasus->rx_urb);
+		usb_kill_urb(pegasus->intr_urb);
+	}
+	intf->dev.power.power_state = PMSG_SUSPEND;
 	return 0;
 }
 
@@ -1376,7 +1383,20 @@ static int pegasus_resume (struct usb_interface *intf)
 {
 	struct pegasus *pegasus = usb_get_intfdata(intf);
 
+	intf->dev.power.power_state = PMSG_ON;
 	netif_device_attach (pegasus->net);
+	if (netif_running(pegasus->net)) {
+		pegasus->rx_urb->status = 0;
+		pegasus->rx_urb->actual_length = 0;
+		read_bulk_callback(pegasus->rx_urb, 0);
+
+		pegasus->intr_urb->status = 0;
+		pegasus->intr_urb->actual_length = 0;
+		intr_callback(pegasus->intr_urb, 0);
+
+		queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
+					CARRIER_CHECK_DELAY);
+	}
 	return 0;
 }
 
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index dd8b4456ea3..3e341b1ffdb 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -3732,11 +3732,17 @@ out:
 
 #ifdef	CONFIG_PM
 
-static int usbnet_suspend (struct usb_interface *intf, u32 state)
+static int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 {
 	struct usbnet		*dev = usb_get_intfdata(intf);
 	
+	/* accelerate emptying of the rx and queues, to avoid
+	 * having everything error out.
+	 */
 	netif_device_detach (dev->net);
+	(void) unlink_urbs (dev, &dev->rxq);
+	(void) unlink_urbs (dev, &dev->txq);
+	intf->dev.power.power_state = PMSG_SUSPEND;
 	return 0;
 }
 
@@ -3744,7 +3750,9 @@ static int usbnet_resume (struct usb_interface *intf)
 {
 	struct usbnet		*dev = usb_get_intfdata(intf);
 
+	intf->dev.power.power_state = PMSG_ON;
 	netif_device_attach (dev->net);
+	tasklet_schedule (&dev->bh);
 	return 0;
 }