On Sunday 29 August 2010 02:01:33 Artem Makhutov wrote: > > As for FreeBSD... How can you be sure that these errors don't occur > > under that OS? Maybe they are simply being ignored instead of reported > > by the driver and in the log. > > I am not absolutely sure here. Hi, The new USB stack in FreeBSD 8.x has several differences from the Linux one. I will list two: 1) Clear-stall is integrated as a state in the USB transfer statemachine. That means you only have to set a flag on the transfer to have the USB stack execute clear-stall before the transfer starts. This flag is usually set on any error except from cancelling an USB transfer. In Linux I've seen that once the modem gets a STALL PID there is no recovery at all. 2) The EHCI was in the 8.x release programmed with CERR=0, with a few exceptions. That means it tries harder to transmit/receive data. --HPS -- 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
