On Wednesday 06 February 2013 12:42:56 Dan Williams wrote: > As part of the initialization sequence, the driver sends a SYNC message > via the control pipe to the firmware, which appears to request a > firmware restart. The firmware responds with an indication via the > interrupt pipe set up by usbnet. If the driver does not receive a > RESTART indication within a certain amount of time, it will periodically > send additional SYNC messages until it receives the RESTART indication. > > Unfortunately, the interrupt URB is only submitted while the netdev > is open, which is usually not the case during initialization, and thus > the firmware's RESTART indication is lost. So the driver continues > sending SYNC messages, and eventually the firmware crashes when it > receives too many. This leads to a wedged netdev. If I understand this correctly we should stop the interrupt pipe once RESTART has been recieved. I am afraid this patch is a bit inefficient. Regards Oliver -- 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
