On Mon, Nov 09, 2020 at 03:53:55PM +0100, Ricardo Ribalda wrote: > Hi Christoph > > I have started now to give a try to your patchset. Sorry for the delay. > > For uvc I have prepared this patch: > https://github.com/ribalda/linux/commit/9094fe223fe38f8c8ff21366d893b43cbbdf0113 > > I have tested successfully in a x86_64 noteboot..., yes I know there > is no change for that platform :). > I am trying to get hold of an arm device that can run the latest > kernel from upstream. > > On the meanwhile if you could take a look to the patch to verify that > this the way that you expect the drivers to use your api I would > appreciate it This looks pretty reaosnable. Note that ifdef CONFIG_DMA_NONCOHERENT in the old code doesn't actually work, as that option is an internal thing just for mips and sh..