Greg:
This patch fixes usb_driver_release_interface() to make it avoid calling
device_release_driver() recursively, i.e., when invoked from within the
disconnect routine for the same device. The patch applies to your
"driver" tree.
Alan Stern
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
Index: driver-2.6/drivers/usb/core/usb.c
===================================================================
--- driver-2.6.orig/drivers/usb/core/usb.c
+++ driver-2.6/drivers/usb/core/usb.c
@@ -322,9 +322,15 @@ void usb_driver_release_interface(struct
if (!dev->driver || dev->driver != &driver->driver)
return;
- /* don't disconnect from disconnect(), or before dev_add() */
- if (!klist_node_attached(&dev->knode_driver) &&
!klist_node_attached(&dev->knode_bus))
+ /* don't release from within disconnect() */
+ if (iface->condition != USB_INTERFACE_BOUND)
+ return;
+
+ /* release only after device_add() */
+ if (klist_node_attached(&dev->knode_bus)) {
+ iface->condition = USB_INTERFACE_UNBINDING;
device_release_driver(dev);
+ }
dev->driver = NULL;
usb_set_intfdata(iface, NULL);
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