Re: Regression: 6eb0233ec2d0 ("usb: don't inherity DMA properties for USB devices")

[Christoph Hellwig]

On Thu, Feb 18, 2021 at 03:56:00PM +0100, Thomas Zimmermann wrote:
> I only have udl devices, but I expect that other DRM USB adapters are also 
> affected.

Find where the driver calls dma_map_* itself instead of using the USB
wrappers and fix that..