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| author |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-11-18 11:35:34 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-11-25 22:36:52 +0100 |
| commit | dea8c09c3285912d3f3566210ebc5ecc3d9191c7 (patch) | |
| tree | f05cb4d39825b5f42124dd9e303605747389d25e /drivers/xen | |
| parent | drm/tee_shm: Drop dma_buf_k(unmap) support (diff) | |
| download | linux-dev-dea8c09c3285912d3f3566210ebc5ecc3d9191c7.tar.xz linux-dev-dea8c09c3285912d3f3566210ebc5ecc3d9191c7.zip | |
xen/gntdev-dmabuf: Ditch dummy map functions
There's no in-kernel users for the k(un)map stuff. And the mmap one is
actively harmful - return 0 and then _not_ actually mmaping can't end
well.
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: xen-devel@lists.xenproject.org
Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-14-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/gntdev-dmabuf.c | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/drivers/xen/gntdev-dmabuf.c b/drivers/xen/gntdev-dmabuf.c index 2c4f324f8626..fe7bd69d6955 100644 --- a/drivers/xen/gntdev-dmabuf.c +++ b/drivers/xen/gntdev-dmabuf.c @@ -342,35 +342,12 @@ static void dmabuf_exp_ops_release(struct dma_buf *dma_buf) mutex_unlock(&priv->lock); } -static void *dmabuf_exp_ops_kmap(struct dma_buf *dma_buf, - unsigned long page_num) -{ - /* Not implemented. */ - return NULL; -} - -static void dmabuf_exp_ops_kunmap(struct dma_buf *dma_buf, - unsigned long page_num, void *addr) -{ - /* Not implemented. */ -} - -static int dmabuf_exp_ops_mmap(struct dma_buf *dma_buf, - struct vm_area_struct *vma) -{ - /* Not implemented. */ - return 0; -} - static const struct dma_buf_ops dmabuf_exp_ops = { .attach = dmabuf_exp_ops_attach, .detach = dmabuf_exp_ops_detach, .map_dma_buf = dmabuf_exp_ops_map_dma_buf, .unmap_dma_buf = dmabuf_exp_ops_unmap_dma_buf, .release = dmabuf_exp_ops_release, - .map = dmabuf_exp_ops_kmap, - .unmap = dmabuf_exp_ops_kunmap, - .mmap = dmabuf_exp_ops_mmap, }; struct gntdev_dmabuf_export_args { |