From: Rodrigo Severo > Sent: 14 May 2015 15:06 > Activating XHCI_TRUST_TX_LENGTH on Renesas uPD720201 USB 3.0 hosts to get rid of > the following warnings when using webcams on this type of host: > > xhci_hcd 0000:06:00.0: WARN Successful completion on short TX: needs > XHCI_TRUST_TX_LENGTH quirk? Given that the driver always reads the receive data length (in order to output the message) is there any reason not to make the 'quirk' the default behaviour? To put it another way, has anyone ever seen hardware that reports a successful completion of a full length transfer and writes a short length into descriptor? This would result in the above message when the quirk wasn't required. Note that the probably ought to have been names 'TRUST_RX_LENGTH' since the driver then uses the length written into the rx descriptor. This has nothing to do with any 'length' field received from the remote system (except that implied by the amount of data). David -- 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
