Greg:
This patch (as556) adds support for unbinding the usb_generic "driver".
That driver only binds to USB devices, as opposed to interfaces, and it
does nothing much besides marking which struct device's go with an
overall USB device plus providing suspend/resume methods. Now that users
can unbind drivers at will using the sysfs "unbind" attribute, we need a
rational way of dealing with USB devices that are no longer under full
control of the USB stack. The patch handles this by unconfiguring the
device, thereby removing all the interfaces and their associated drivers
and children.
Alan Stern
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
Index: usb-2.6/drivers/usb/core/usb.c
===================================================================
--- usb-2.6.orig/drivers/usb/core/usb.c
+++ usb-2.6/drivers/usb/core/usb.c
@@ -65,6 +65,16 @@ static int generic_probe (struct device
}
static int generic_remove (struct device *dev)
{
+ struct usb_device *udev = to_usb_device(dev);
+
+ /* if this is only an unbind, not a physical disconnect, then
+ * unconfigure the device */
+ if (udev->state == USB_STATE_CONFIGURED)
+ usb_set_configuration(udev, 0);
+
+ /* in case the call failed or the device was suspended */
+ if (udev->state >= USB_STATE_CONFIGURED)
+ usb_disable_device(udev, 0);
return 0;
}
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