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libdrm: amdgpu: Adding DRM_RDWR flag in amdgpu_bo_export

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Currently while exporting prime handle to fd read write access is
not granted. mmap fails because of this. mmap was not supported on
prime initially.
Here is link to related discussion
https://lists.freedesktop.org/archives/dri-devel/2017-February/131840.html

Adding the DRM_RDWR flag in amdgpu_bo_export to support mmap.

Signed-off-by: Satyajit <satyajit.sahu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Satyajit 2018-02-26 18:07:03 +05:30 • committed by Christian König
parent 361d4bffd3
commit b81d44d587
1 changed files with 3 additions and 2 deletions
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5
amdgpu/amdgpu_bo.c
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@ -246,8 +246,9 @@ int amdgpu_bo_export(amdgpu_bo_handle bo,
case amdgpu_bo_handle_type_dma_buf_fd:
amdgpu_add_handle_to_table(bo);
return drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC,
(int*)shared_handle);
return drmPrimeHandleToFD(bo->dev->fd, bo->handle,
DRM_CLOEXEC | DRM_RDWR,
(int*)shared_handle);
}
return -EINVAL;
}