[PATCH 12/21] iommu/mediatek: Add iova reserved function

[Yong Wu]

On Mon, 2020-07-13 at 15:33 +0800, Pi-Hsun Shih wrote:
> On Sat, Jul 11, 2020 at 2:51 PM Yong Wu <yong.wu at mediatek.com> wrote:
> >
> > For multiple iommu_domains, we need to reserve some iova regions, so we
> > will add mtk_iommu_iova_region structure. It includes the base address
> > and size of the range.
> > This is a preparing patch for supporting multi-domain.
> >
> > Signed-off-by: Anan sun<anan.sun at mediatek.com>
> > Signed-off-by: Hao Chao<hao.chao at mediatek.com>
> > Signed-off-by: Yong Wu <yong.wu at mediatek.com>
> > ---
> >  drivers/iommu/mtk_iommu.c | 37 +++++++++++++++++++++++++++++++++++++
> >  drivers/iommu/mtk_iommu.h |  5 +++++
> >  2 files changed, 42 insertions(+)
> >
> > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
> > index 03a6d66f4bef..fdfdb75706e0 100644
> > --- a/drivers/iommu/mtk_iommu.c
> > +++ b/drivers/iommu/mtk_iommu.c
> > @@ -151,6 +151,11 @@ static LIST_HEAD(m4ulist); /* List all the M4U HWs */
> > ...
> > +
> > +static void mtk_iommu_put_resv_regions(struct device *dev,
> > +                                      struct list_head *head)
> > +{
> > +       struct iommu_resv_region *entry, *next;
> > +
> > +       list_for_each_entry_safe(entry, next, head, list)
> > +               kfree(entry);
> > +}
> > +
> 
> This is the same as generic_iommu_put_resv_regions, use that as the
> .put_resv_regions callback instead?

Thanks very much for the review.

Yes. I will fix it in next version.

> 
> > ...
> > --
> > 2.18.0