[PATCH v2 19/22] drm/rockchip: Use iommu_paging_domain_alloc()

[Lu Baolu]

Commit <421be3ee36a4> ("drm/rockchip: Refactor IOMMU initialisation") has
refactored rockchip_drm_init_iommu() to pass a device that the domain is
allocated for. Replace iommu_domain_alloc() with
iommu_paging_domain_alloc() to retire the former.

Signed-off-by: Lu Baolu <baolu...@linux.intel.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index ab55d7132550..52126ffb9280 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -103,13 +103,17 @@ static int rockchip_drm_init_iommu(struct drm_device 
*drm_dev)
        struct rockchip_drm_private *private = drm_dev->dev_private;
        struct iommu_domain_geometry *geometry;
        u64 start, end;
+       int ret;
 
        if (IS_ERR_OR_NULL(private->iommu_dev))
                return 0;
 
-       private->domain = iommu_domain_alloc(private->iommu_dev->bus);
-       if (!private->domain)
-               return -ENOMEM;
+       private->domain = iommu_paging_domain_alloc(private->iommu_dev);
+       if (IS_ERR(private->domain)) {
+               ret = PTR_ERR(private->domain);
+               private->domain = NULL;
+               return ret;
+       }
 
        geometry = &private->domain->geometry;
        start = geometry->aperture_start;
-- 
2.34.1