Xiaofan Chen <xiaofanc@xxxxxxxxx> writes: > Basically I am just wondering if the following statement is true or not. > On Fri, Aug 13, 2010 at 5:31 PM, Dries Van Puymbroeck wrote: >> When a mutlifunction gadget has more than 1 configuration, Windows does not >> use its generic driver for multifunction USB devices. > I am thinking the inf file is not necessary. > "When the system detects that a USB device is composite, it loads the > USB common class generic parent driver (usbccgp.sys)." > http://msdn.microsoft.com/en-us/library/ff538059%28VS.85%29.aspx <http://msdn.microsoft.com/en-us/library/ff537109(v=VS.85).aspx> specifies that for a device to be identified as composite it (among other things) "must have a single configuration". The page has also a passage which seems to indicate that the INF is needed: > If you want the generic parent driver to manage your device, but your > device does not have the characteristics necessary to ensure that the > system will generate a compatible ID of USB\COMPOSITE, you will have > to provide an INF file that loads the generic parent driver. Selecting of the configuration is also mentioned as a requirement, and the next paragraph points to a web page you've cited: > If your composite device has multiple configurations, the INF file you > provide must specify which configuration the generic parent should use > in the registry. The necessary registry keys are described in > Selecting the Configuration for a Composite USB Device. -- Best regards, _ _ .o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michal "mina86" Nazarewicz (o o) ooo +--<mina86-tlen.pl>--<jid:mina86-jabber.org>--ooO--(_)--Ooo-- -- 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
