On Thu, Jun 18, 2009 at 2:28 PM, Daniel Ng<daniel.ng1234@xxxxxxxxx> wrote: > I've found this comment in f_acm.c, 2.6.27: > > * Note that even MS-Windows has some support for ACM. However, that > * support is somewhat broken because when you use ACM in a composite > * device, having multiple interfaces confuses the poor OS. It doesn't > * seem to understand CDC Union descriptors. The new "association" > * descriptors (roughly equivalent to CDC Unions) may sometimes help. > > Does this mean I will not be able to successfully connect a Linux box > to a Windows PC via the Linux box's CDC ACM composite gadget serial > driver? > I do not know about the Linux CDC ACM composite gadget serial driver. But you can get CDC-ACM Composite Device working under XP SP3 and Vista. You need to use IAD (interface association descriptor). http://www.microchip.com/forums/tm.aspx?m=336385 http://www.microchip.com/forums/tm.aspx?m=418885 http://www.cygnal.org/ubb/Forum9/HTML/001050.html For XP SP2, you need two hot fixes from Microsoft. http://support.microsoft.com/kb/918365/en-us http://support.microsoft.com/kb/935892/en-us -- Xiaofan http://mcuee.blogspot.com -- 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
