On Mon, 20 Jun 2011, Sarah Sharp wrote: > Alan, > > All of this is a lot of work for the xHCI driver, and it seems like > other host drivers also could suffer from active URBs being outstanding > at inopportune times due to buggy drivers. Would it be possible for the > USB core to cancel any outstanding URBs before resetting a device, > changing a configuration or alternate interface setting, or deallocating > a device? It seems like that work really needs to be done in a central > location. I don't see any reason why this couldn't be done. In fact, we already do cancel URBs before changing configs or deallocating a device. (In fact looking at the current code for usb_reset_configuration(), it appears that the failure paths forget to call usb_enable_interface() to re-enable the old endpoints...) I'll send a patch for you to try out... Alan Stern -- 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
