[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 9/9] xen/gntdev: Implement dma-buf import functionality
On 06/12/2018 09:42 AM, Oleksandr Andrushchenko wrote: int gntdev_dmabuf_imp_release(struct gntdev_dmabuf_priv *priv, u32 fd) { - return -EINVAL; + struct gntdev_dmabuf *gntdev_dmabuf; + struct dma_buf_attachment *attach; + struct dma_buf *dma_buf; + + gntdev_dmabuf = dmabuf_imp_find_unlink(priv, fd); + if (IS_ERR(gntdev_dmabuf)) + return PTR_ERR(gntdev_dmabuf); + + pr_debug("Releasing DMA buffer with fd %d\n", fd); + + attach = gntdev_dmabuf->u.imp.attach; + + if (gntdev_dmabuf->u.imp.sgt) + dma_buf_unmap_attachment(attach, gntdev_dmabuf->u.imp.sgt, + DMA_BIDIRECTIONAL); + dma_buf = attach->dmabuf; + dma_buf_detach(attach->dmabuf, attach); + dma_buf_put(dma_buf); + + dmabuf_imp_end_foreign_access(gntdev_dmabuf->u.imp.refs, + gntdev_dmabuf->nr_pages); Should you first end foreign access, before doing anything? -boris + dmabuf_imp_free_storage(gntdev_dmabuf); + return 0; } _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |