Am Dienstag, 22. Juni 2010, 14:42:25 schrieb Otavio Salvador: > Hello Greg, > > On Mon, Jun 21, 2010 at 8:17 PM, Greg KH <greg@xxxxxxxxx> wrote: > > On Mon, Jun 21, 2010 at 07:58:20PM -0300, Otavio Salvador wrote: > >> Hello, > >> > >> I got a USB device that is compatible with usb-serial however it is > >> detected automatically, in lastest kernel, as cdc_acm modem but it is > >> not a modem but a Pinpad (device used for credit-card usage). I'm > >> looking for a way to discover which chipset it has. How can I do that? > > > > It should be working ok as a cdc-acm device, right? It just provides a > > virtual tty port to read data from the device, no need to find out the > > chipset as Linux should be working just fine with it already. > > I see two issues with this: > > - the device is much near of a serial port then a modem (but doesn't > appears as ttyUSBX); > - how dynamically we can "detect" it is not a modem? We can't. We'd need to blacklist in cdc-acm.c. Does the device support the cdc status notifications? 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
