On Mon, 28 Apr 2014, Mathias Nyman wrote: > > > On 04/27/2014 11:11 AM, John Freed wrote: > > I hope you don't mind me writing you directly, and if someone else can > > handle this better please let me know. > > > > I'm trying to do some backend work on libusb and I notice that the > > kernel keeps all the information on the Device Descriptors except for > > the value of the Serial Number string. > > > > (Well, almost all. Oddly, the "manufacturer" string is not included for > > hubs from Intel! I presume that's because they're really PCI devices and > > there is some black magic going on in the background to fill in the USB > > device descriptor.) Tha "manufacturer" file is cached in the kernel if the device has one. If it doesn't show up for your Intel hubs, it must be because the hubs don't have a manufacturer string descriptor. Alan Stern -- 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
