Hi, I am unable to figure out what was happening, but there seems to be a patch backport error in v4.4.40. Commit c53af76d5de1 (usb: gadget: composite: always set ep->mult to a sensible value) is backported from upstream eaa496ffaaf19591fe471a36cef366146eeb9153, however c53af76d5de1 has + _ep->mult = usb_endpoint_maxp(_ep->desc) & 0x7ff; but eaa496ffaaf19591fe471a36cef366146eeb9153 has + _ep->mult = usb_endpoint_maxp_mult(_ep->desc); they are not consistant. I haven't checked v4.9 yet, not sure if this happens there too. Regards, -Bin. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html