Re: Regression: 6eb0233ec2d0 ("usb: don't inherity DMA properties for USB devices")
From: Christoph Hellwig
Date: Thu Feb 18 2021 - 12:54:55 EST
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..