Hi Balbi, This is regarding the gadget serial (serial.c) deciding to send the ZLP by setting req->zero to 1/0. The udc driver in our case decides to send the ZLP based on the req->zero value set by the gadget. But we see that the serial gadget driver does not set req->zero. But others like u_ether and f_massstorage are setting the same. Is there any specific reason why this is not done in gadget serial ? -- Anjana -- 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