[PATCH] USB: add usbfs stubs for suspend and resume

[Alan Stern]

This patch (as1022b) adds stub methods for suspend and resume to the
usbfs driver. There isn't much they can do since there's no way to
inform a user task about the events. But it's important to have the
stubs, because an upcoming change to usbcore will automatically unbind
drivers that don't have those methods when a suspend occurs.

Signed-off-by: Alan Stern <***@rowland.harvard.edu>

---

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 +402,25 @@ 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 suspend or resumes.
+ */
+static int driver_suspend(struct usb_interface *intf, pm_message_t msg)
+{
+ return 0;
+}
+
+static int driver_resume(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,
};

static int claimintf(struct dev_state *ps, unsigned int ifnum)


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