linux-kernel - [PATCH 1/3] drm/virtio: implement prime mmap

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Date:   Wed, 27 Feb 2019 15:44:39 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 1/3] drm/virtio: implement prime mmap

Sync gem vm_node.start with ttm vm_node.start,
then we can just call drm_gem_prime_mmap().

Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 drivers/gpu/drm/virtio/virtgpu_prime.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_prime.c b/drivers/gpu/drm/virtio/virtgpu_prime.c
index c59ec34c80a5..b4c9199349e7 100644
--- a/drivers/gpu/drm/virtio/virtgpu_prime.c
+++ b/drivers/gpu/drm/virtio/virtgpu_prime.c
@@ -56,7 +56,10 @@ void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
 }
 
 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
-		       struct vm_area_struct *area)
+			   struct vm_area_struct *vma)
 {
-	return -ENODEV;
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
+
+	bo->gem_base.vma_node.vm_node.start = bo->tbo.vma_node.vm_node.start;
+	return drm_gem_prime_mmap(obj, vma);
 }
-- 
2.9.3