Am Donnerstag, 1. April 2010 11:38:15 schrieb Gadiyar, Anand: > Was the bug that usb_autopm_do_device() would hold the usb_pm_lock when > calling cdc-acm's suspend method, and that acm_suspend eventually calls > cancel_work_sync(&acm->waker) - which blocks if the callback is running, > and if acm->waker's callback is running, it calls usb_autopm_get_interface > which tries to usb_pm_lock()? Yes, that was the bug. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html