On Wed, Oct 14, 2015 at 11:18 PM, Alan Stern <st...@rowland.harvard.edu> wrote: > On Wed, 14 Oct 2015, Jassi Brar wrote: > >> BTW, should the gadget stack ever queue a Non-ZLP as reply to some >> setup request that has USB_DIR_IN not set? > > Yes. If USB_DIR_IN is not set then the control transfer is OUT, so the > gadget needs to queue a request to receive some data from the host. > That request will obviously need to be a non-ZLP. > By 'reply' I meant after reading out and parsing the setup(control-out) request. I am sure we need to send a ZLP.
> Could this cause the problem you're seeing? The host tries to send > more data than the gadget is ready to receive? (Although then the > error code on the gadget side should be -75, not -71.) > Thanks, but as you said my problem is not that (I get protocol error -71). My problem is my udc driver actually tries to send a 7 byte response to a control-out command. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
