[PATCH] USB: add usbfs stubs for suspend, resume, etc.

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

THis patch (as1022) adds stub methods for suspend/resume/reset_resume
and pre-rreset/post-reset to the usbfs_driver.  There isn't much they
can do, since there's no way to inform a user task about any of these
events.  But it's important to have the stubs, because an upcoming
change to usbcore will automatically unbind drivers that don't have
these methods.

Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>

---

Index: usb-2.6/drivers/usb/core/devio.c
===================================================================
--- usb-2.6.orig/drivers/usb/core/devio.c
+++ usb-2.6/drivers/usb/core/devio.c
@@ -402,10 +402,43 @@ static void driver_disconnect(struct usb
 	destroy_async_on_interface(ps, ifnum);
 }
 
+/* The following routines are merely placeholders.  There is no way
+ * to inform a user task about resets, suspend/resume, or unbind events.
+ */
+static int driver_suspend(struct usb_interface *intf, pm_message_t msg)
+{
+	return 0;
+}
+
+static int driver_resume(struct usb_interface *intf)
+{
+	return 0;
+}
+
+static int driver_reset_resume(struct usb_interface *intf)
+{
+	return 0;
+}
+
+static int driver_pre_reset(struct usb_interface *intf)
+{
+	return 0;
+}
+
+static int driver_post_reset(struct usb_interface *intf)
+{
+	return 0;
+}
+
 struct usb_driver usbfs_driver = {
 	.name =		"usbfs",
 	.probe =	driver_probe,
 	.disconnect =	driver_disconnect,
+	.suspend =	driver_suspend,
+	.resume =	driver_resume,
+	.reset_resume =	driver_reset_resume,
+	.pre_reset =	driver_pre_reset,
+	.post_reset =	driver_post_reset,
 };
 
 static int claimintf(struct dev_state *ps, unsigned int ifnum)


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