On Thu, 13 Aug 2009, Vernon Sauder wrote: > Robert, > > In our testing, we found that the HW-bit solution for single-threading > the setup requests is not sufficient to eliminate the "invalid state" > warning message. It seems that the ACM bit is not honored for set > configuration packets. We saw the host send an IN packet directly after > the set conf before the gadget had time to perform the callback to the > udc. We did not see any ill effect on the interaction by hitting this > stage. Even though you didn't see any ill effect, it can nevertheless cause problems. If the host starts sending requests before the Set-Config has completed, it may end up trying to communicate with endpoints before they are enabled. That won't be good. 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
