On Tuesday 19 May 2009, Aric D. Blumer wrote: > While this patch works with a Windows RNDIS host, it does not with a > Linux RNDIS host. That may be because RNDIS on Linux is discouraged, at least for devices that can behave sanely. > Here is the host dmesg output: > > usb 1-2.7: new full speed USB device using ehci_hcd and address 44 > usb 1-2.7: configuration #1 chosen from 2 choices > usb 1-2.7: unsupported MDLM descriptors Means the "zaurus" driver was kicking in; that's what emits that message. I'm a bit puzzled what it would have been complaining about though, I guess something got mangled. Enable DEBUG (by hand, sigh) in that driver to get a bit more debug information. > usb 1-2.7: New USB device found, idVendor=0525, idProduct=a4a2 ... while in fact the "cdc_subset" driver should apply. I'm not sure why that says USB_DEVICE_VER (0x0525, 0xa4a2, 0x0203, 0x0203), That version code is making it kick in only for pxa25x, and at this point I have no clue why that restriction would apply. Best to make it be USB_DEVICE(0x0525, 0xa4a2). > usb 1-2.7: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > usb 1-2.7: Product: RNDIS/Ethernet Gadget > usb 1-2.7: Manufacturer: Linux 2.6.28-sdg with pxa27x_udc > > The "unsupported MDLM descriptors" is the key, I think. I believe it's > saying the Linux RNDIS drivers Not at all. Go look at the code. You won't find that message in the RNDIS driver at all. > are looking for the full CDC Ethernet > descriptors, but the pxa27x_udc doesn't support them. Nope. The Zaurus code exists for hardware which uses > So pxa27x_ucd + RNDIS works with Windows XP (not sure about other > versions), but it doesn't with the recent Linux kernels. Perhaps the > Linux RNDIS host drivers are too strict? I don't know the specs, so I > couldn't say. I'll look at this patch, it looks right for some cases but not all. - Dave -- 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
