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virtio: Rework virtio_gpu_object_kmap()

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Currently, virtio_gpu_object_kmap() is only called by
virtio_gpufb_create(), when a DRM framebuffer is created.

Thus, instead of returning the vmap'ed address, emit a warning
if virtio_gpu_object_kmap is called on an already mapped
object. With this change, kmap/kunmap calls are now balanced.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180925161606.17980-3-ezequiel@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Ezequiel Garcia
2018-09-25 18:16:05 +02:00
committed by Gerd Hoffmann
parent 02c87cabd6
commit a20c4173c4
3 changed files with 6 additions and 17 deletions
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2
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -364,7 +364,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
unsigned long size, bool kernel, bool pinned,
struct virtio_gpu_object **bo_ptr);
void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
int virtio_gpu_object_kmap(struct virtio_gpu_object *bo, void **ptr);
int virtio_gpu_object_kmap(struct virtio_gpu_object *bo);
int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
struct virtio_gpu_object *bo);
void virtio_gpu_object_free_sg_table(struct virtio_gpu_object *bo);