gpu: host1x: Use iommu_paging_domain_alloc()

An iommu domain is allocated in host1x_iommu_attach() and is attached to
host->dev. Use iommu_paging_domain_alloc() to make it explicit.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240610085555.88197-8-baolu.lu@linux.intel.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240812071605.9513-1-baolu.lu@linux.intel.com

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index f006bc931324fa504eccf309c35f5c43a83d65ae..b62e4f0e8130fb8276ffcf4b20eebc2ae7223028 100644 (file)
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -404,9 +404,10 @@ static struct iommu_domain *host1x_iommu_attach(struct host1x *host)
                if (err < 0)
                        goto put_group;
 
-               host->domain = iommu_domain_alloc(&platform_bus_type);
-               if (!host->domain) {
-                       err = -ENOMEM;
+               host->domain = iommu_paging_domain_alloc(host->dev);
+               if (IS_ERR(host->domain)) {
+                       err = PTR_ERR(host->domain);
+                       host->domain = NULL;
                        goto put_cache;
                }