[PATCH 5/9] drm/virtio: remove virtgpu_gem_prime_import_sg_table

[Gurchetan Singh]

Sharing memory between virtio devices is ill-defined, so until
we have something let's get rid of this.

drm_gem_prime_import_dev returns an error if the callback is NULL.

Signed-off-by: Gurchetan Singh <gurchetansingh at chromium.org>
---
 drivers/gpu/drm/virtio/Makefile        |  2 +-
 drivers/gpu/drm/virtio/virtgpu_drv.c   |  3 +-
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  5 ----
 drivers/gpu/drm/virtio/virtgpu_prime.c | 38 --------------------------
 4 files changed, 2 insertions(+), 46 deletions(-)
 delete mode 100644 drivers/gpu/drm/virtio/virtgpu_prime.c

diff --git a/drivers/gpu/drm/virtio/Makefile b/drivers/gpu/drm/virtio/Makefile
index 92aa2b3d349d..36d8cf8e0cec 100644
--- a/drivers/gpu/drm/virtio/Makefile
+++ b/drivers/gpu/drm/virtio/Makefile
@@ -6,6 +6,6 @@
 virtio-gpu-y := virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o \
 	virtgpu_display.o virtgpu_vq.o \
 	virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \
-	virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o
+	virtgpu_ioctl.o virtgpu_trace_points.o
 
 obj-$(CONFIG_DRM_VIRTIO_GPU) += virtio-gpu.o
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 8cf27af3ad53..e942465e4fb1 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -200,8 +200,7 @@ static struct drm_driver driver = {
 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_prime_mmap = drm_gem_prime_mmap,
-	.gem_prime_import_sg_table = virtgpu_gem_prime_import_sg_table,
-
+	.gem_prime_import_sg_table = NULL,
 	.gem_create_object = virtio_gpu_create_object,
 	.fops = &virtio_gpu_driver_fops,
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 8dfb39f98552..77f446608ca9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -359,11 +359,6 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 			     struct virtio_gpu_object_params *params,
 			     struct virtio_gpu_object **bo_ptr,
 			     struct virtio_gpu_fence *fence);
-/* virtgpu_prime.c */
-struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
-	struct drm_device *dev, struct dma_buf_attachment *attach,
-	struct sg_table *sgt);
-
 /* virgl debugfs */
 int virtio_gpu_debugfs_init(struct drm_minor *minor);
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c
deleted file mode 100644
index 050d24c39a8f..000000000000
--- a/drivers/gpu/drm/virtio/virtgpu_prime.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright 2014 Canonical
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: Andreas Pokorny
- */
-
-#include <drm/drm_prime.h>
-
-#include "virtgpu_drv.h"
-
-/* Empty Implementations as there should not be any other driver for a virtual
- * device that might share buffers with virtgpu
- */
-
-struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
-	struct drm_device *dev, struct dma_buf_attachment *attach,
-	struct sg_table *table)
-{
-	return ERR_PTR(-ENODEV);
-}
-- 
2.24.1.735.g03f4e72817-goog