[PATCH v3 3/3] iommu/arm-smmu-v3: Allow ATS to be always on

[Tian, Kevin]

> From: Jason Gunthorpe <jgg at nvidia.com>
> Sent: Tuesday, March 31, 2026 8:08 PM
> 
> On Tue, Mar 31, 2026 at 08:40:17AM +0000, Tian, Kevin wrote:
> > > From: Nicolin Chen <nicolinc at nvidia.com>
> > > Sent: Saturday, March 7, 2026 7:41 AM
> > >
> > > +
> > > +	master->ats_always_on = true;
> > > +
> > > +	ret = arm_smmu_alloc_cd_tables(master);
> > > +	if (ret)
> > > +		return ret;
> > > +
> > > +out_prepare:
> > > +	pci_prepare_ats(pdev, stu);
> > > +	return 0;
> >
> > is there a problem leaving ats_always_on being true while
> > allocating cd tables fails?
> 
> I would expect this error flow unwinds back up to failing device
> probe?
> 

yeah, I thought error was ignored.

Reviewed-by: Kevin Tian <kevin.tian at intel.com>