On Wed, 20 Dec 2006, Clemens Ladisch wrote: > > Can you provide information (either "lsusb -v" output or, more succinctly, > > the entry from /proc/bus/usb/devices) for such a device? > > T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 > D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > P: Vendor=0763 ProdID=2001 Rev= 1.01 > S: Manufacturer=M Audio > S: Product=USB AudioSport Quattro (tm) > C:* #Ifs=10 Cfg#= 1 Atr=40 MxPwr= 0mA > I: If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=(none) > I: If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 1 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 2 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=(none) > I: If#= 4 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 4 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 576 Ivl= 1ms > I: If#= 4 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 288 Ivl= 1ms > I: If#= 4 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=03(O) Atr=09(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 5 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 5 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 576 Ivl= 1ms > I: If#= 5 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 288 Ivl= 1ms > I: If#= 5 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=85(I) Atr=0d(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 6 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=(none) > I: If#= 7 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 7 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 576 Ivl= 1ms > I: If#= 7 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 288 Ivl= 1ms > I: If#= 7 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=04(O) Atr=09(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 8 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=audio > I: If#= 8 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 576 Ivl= 1ms > I: If#= 8 Alt= 3 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 288 Ivl= 1ms > I: If#= 8 Alt= 4 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=audio > E: Ad=86(I) Atr=0d(Isoc) MxPS= 192 Ivl= 1ms > I: If#= 9 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) > E: Ad=81(I) Atr=03(Int.) MxPS= 32 Ivl= 1ms > E: Ad=82(I) Atr=02(Bulk) MxPS= 32 Ivl= 0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 32 Ivl= 0ms > > (interface 9 is for MIDI)
Thanks. It really does share endpoint 0x03 between interface 1 and interface 4, and it shares endpoint 0x85 between interface 2 and interface 5. So yes, you'll get into trouble if you put both interfaces of either pair into a non-default altsetting. Evidently this device is in violation of the USB spec. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
