Am Mittwoch, 25. Januar 2012, 20:02:05 schrieb Bjørn Mork: > We're holding the global wdm_mutex through most of wdm_open, including > when it calls usb_autopm_get_interface. This call can block waiting for > a resume, which will need to look up the device list. So we deadlock. > > Fix by using a dedicated lock for the device list. In that case, as the common case should be a very short list and you never sleep, why a mutex? A spinlock would do the job. 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
