On Wed, Dec 02, 2015 at 10:54:52AM -0500, Alan Stern wrote: >> [ 28.796244] DMAR: Allocating domain for 2-2 failed > I don't know what the reason is for that. It may be that your kernel > isn't configured to allocate as much coherent memory as you are asking > for. We'll have to investigate further, maybe ask somebody who knows > more about how the DMA subsystem works. I'm thinking; maybe should the memory not be allocated against the USB device, but against the controller it hangs on? (Note that it complains about allocating the _domain_, not the memory itself.) Do you know if that's possible from this point in the code? /* Steinar */ -- Homepage: https://www.sesse.net/ -- 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
