4 files changed, 22 insertions, 29 deletions

diff --git a/drivers/gpu/drm/panfrost/Kconfig b/drivers/gpu/drm/panfrost/Kconfig
index 079600328be1..e6403a9d66ad 100644
--- a/drivers/gpu/drm/panfrost/Kconfig
+++ b/drivers/gpu/drm/panfrost/Kconfig
@@ -3,7 +3,8 @@
 config DRM_PANFROST
 	tristate "Panfrost (DRM support for ARM Mali Midgard/Bifrost GPUs)"
 	depends on DRM
-	depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
+	depends on ARM || ARM64 || COMPILE_TEST
+	depends on !GENERIC_ATOMIC64    # for IOMMU_IO_PGTABLE_LPAE
 	depends on MMU
 	select DRM_SCHED
 	select IOMMU_SUPPORT
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 2fa5afe21288..919e6cc04982 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -82,6 +82,7 @@ static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data,
 	struct panfrost_gem_object *bo;
 	struct drm_panfrost_create_bo *args = data;
 	struct panfrost_gem_mapping *mapping;
+	int ret;
 
 	if (!args->size || args->pad ||
 	    (args->flags & ~(PANFROST_BO_NOEXEC | PANFROST_BO_HEAP)))
@@ -92,21 +93,29 @@ static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data,
 	    !(args->flags & PANFROST_BO_NOEXEC))
 		return -EINVAL;
 
-	bo = panfrost_gem_create_with_handle(file, dev, args->size, args->flags,
-					     &args->handle);
+	bo = panfrost_gem_create(dev, args->size, args->flags);
 	if (IS_ERR(bo))
 		return PTR_ERR(bo);
 
+	ret = drm_gem_handle_create(file, &bo->base.base, &args->handle);
+	if (ret)
+		goto out;
+
 	mapping = panfrost_gem_mapping_get(bo, priv);
-	if (!mapping) {
-		drm_gem_object_put(&bo->base.base);
-		return -EINVAL;
+	if (mapping) {
+		args->offset = mapping->mmnode.start << PAGE_SHIFT;
+		panfrost_gem_mapping_put(mapping);
+	} else {
+		/* This can only happen if the handle from
+		 * drm_gem_handle_create() has already been guessed and freed
+		 * by user space
+		 */
+		ret = -EINVAL;
 	}
 
-	args->offset = mapping->mmnode.start << PAGE_SHIFT;
-	panfrost_gem_mapping_put(mapping);
-
-	return 0;
+out:
+	drm_gem_object_put(&bo->base.base);
+	return ret;
 }
 
 /**
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index 293e799e2fe8..3c812fbd126f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -235,12 +235,8 @@ struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t
 }
 
 struct panfrost_gem_object *
-panfrost_gem_create_with_handle(struct drm_file *file_priv,
-				struct drm_device *dev, size_t size,
-				u32 flags,
-				uint32_t *handle)
+panfrost_gem_create(struct drm_device *dev, size_t size, u32 flags)
 {
-	int ret;
 	struct drm_gem_shmem_object *shmem;
 	struct panfrost_gem_object *bo;
 
@@ -256,16 +252,6 @@ panfrost_gem_create_with_handle(struct drm_file *file_priv,
 	bo->noexec = !!(flags & PANFROST_BO_NOEXEC);
 	bo->is_heap = !!(flags & PANFROST_BO_HEAP);
 
-	/*
-	 * Allocate an id of idr table where the obj is registered
-	 * and handle has the id what user can see.
-	 */
-	ret = drm_gem_handle_create(file_priv, &shmem->base, handle);
-	/* drop reference from allocate - handle holds it now. */
-	drm_gem_object_put(&shmem->base);
-	if (ret)
-		return ERR_PTR(ret);
-
 	return bo;
 }
 
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h
index 8088d5fd8480..ad2877eeeccd 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.h
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.h
@@ -69,10 +69,7 @@ panfrost_gem_prime_import_sg_table(struct drm_device *dev,
 				   struct sg_table *sgt);
 
 struct panfrost_gem_object *
-panfrost_gem_create_with_handle(struct drm_file *file_priv,
-				struct drm_device *dev, size_t size,
-				u32 flags,
-				uint32_t *handle);
+panfrost_gem_create(struct drm_device *dev, size_t size, u32 flags);
 
 int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_priv);
 void panfrost_gem_close(struct drm_gem_object *obj,