Re: [PATCH AUTOSEL 5.15 10/47] iommu/arm-smmu-v3: Make default domain type of HiSilicon PTT device to identity

[Sasha Levin]

On Thu, Oct 13, 2022 at 08:07:46AM +0100, John Garry wrote:
> On 13/10/2022 01:20, Sasha Levin wrote:
> > From: Yicong Yang<yangyicong@xxxxxxxxxxxxx>
> >
> > [ Upstream commit 24b6c7798a0122012ca848ea0d25e973334266b0 ]
> >
> > The DMA operations of HiSilicon PTT device can only work properly with
> > identical mappings. So add a quirk for the device to force the domain
> > as passthrough.
> >
> > Acked-by: Will Deacon<will@xxxxxxxxxx>
> > Signed-off-by: Yicong Yang<yangyicong@xxxxxxxxxxxxx>
> > Reviewed-by: John Garry<john.garry@xxxxxxxxxx>
> > Link:https://lore.kernel.org/r/20220816114414.4092-2-yangyicong@xxxxxxxxxx
> > Signed-off-by: Mathieu Poirier<mathieu.poirier@xxxxxxxxxx>
> > Signed-off-by: Sasha Levin<sashal@xxxxxxxxxx>
> > ---
> >  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 21 +++++++++++++++++++++
> >  1 file changed, 21 insertions(+)
>
> I don't think that this commit should be backported to any stable 
> tree. It's only required for a new driver.

I'll drop it, thanks!
--
Thanks,
Sasha