[PATCH] Revert "drm/amdgpu: validate user GEM object size"

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

It was at the same time too strict (for linear tiling modes, where no
height alignment is required) and too lenient (for 2D tiling modes,
where height may need to be aligned to values > 8).

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 83f821e993c8..70a816dd8b4d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -531,7 +531,6 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev,
 	struct drm_gem_object *obj;
 	struct amdgpu_framebuffer *amdgpu_fb;
 	int ret;
-	int height;
 	struct amdgpu_device *adev = dev->dev_private;
 	int cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
 	int pitch = mode_cmd->pitches[0] / cpp;
@@ -556,13 +555,6 @@ amdgpu_display_user_framebuffer_create(struct drm_device *dev,
 		return ERR_PTR(-EINVAL);
 	}
 
-	height = ALIGN(mode_cmd->height, 8);
-	if (obj->size < pitch * height) {
-		DRM_DEBUG_KMS("Invalid GEM size: expecting >= %d but got %zu\n",
-			      pitch * height, obj->size);
-		return ERR_PTR(-EINVAL);
-	}
-
 	amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL);
 	if (amdgpu_fb == NULL) {
 		drm_gem_object_put_unlocked(obj);
-- 
2.20.1