In the commit 4f956c97d26b ("iommu/mediatek: Move domain_finalise into
attach_device"), I overlooked the sharing pgtable case.
After that commit, the "data" in the mtk_iommu_domain_finalise always is
the data of the current IOMMU HW. Fix this for the sharing pgtable case.
Only affect mt2712 which is the only SoC that share pgtable currently.
Fixes: 4f956c97d26b ("iommu/mediatek: Move domain_finalise into attach_device")
Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
drivers/iommu/mtk_iommu.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index fbe10f92afcc..1a742bd1cdc9 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -446,7 +446,7 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain)
static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *dev)
{
- struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
+ struct mtk_iommu_data *data = dev_iommu_priv_get(dev), *frstdata;
struct mtk_iommu_domain *dom = to_mtk_domain(domain);
struct device *m4udev = data->dev;
int ret, domid;
@@ -456,7 +456,10 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
return domid;
if (!dom->data) {
- if (mtk_iommu_domain_finalise(dom, data, domid))
+ /* Data is in the frstdata in sharing pgtable case. */
+ frstdata = mtk_iommu_get_m4u_data();
+
+ if (mtk_iommu_domain_finalise(dom, frstdata, domid))
return -ENODEV;
dom->data = data;
}
--
2.18.0
