Hi, On Wed, May 27, 2020 at 03:00:22PM +0200, Oliver Neukum wrote: > Am Mittwoch, den 27.05.2020, 13:28 +0100 schrieb Sean Young: > > > This violates the DMA coherency rules. The buffers must be > > > allocated separately with kmalloc(). > > > > Right, I'll fix this and send out a v3. There are other usb drivers in > > drivers/media/rc/.. that break this rule too. > > Unfortunately. Yes, I'll go through them in the near future and makes fixes based on this thread -- thanks! Sean