From: Gerd Hoffmann Date: Mon, 25 Jun 2018 06:44:52 +0000 (+0200) Subject: sample/mdev/mbochs: add mbochs_kunmap_dmabuf X-Git-Tag: v4.18-rc4~17^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7733e05b34f5d855c5590d816b41ddfee972d188;p=thirdparty%2Fkernel%2Flinux.git sample/mdev/mbochs: add mbochs_kunmap_dmabuf There is no default implementation for dma_buf_ops->unmap. So add a function unmapping the page, otherwise we'll leak them. Signed-off-by: Gerd Hoffmann Signed-off-by: Alex Williamson --- diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index aa25cda21d22a..85ac6037696fd 100644 --- a/samples/vfio-mdev/mbochs.c +++ b/samples/vfio-mdev/mbochs.c @@ -811,11 +811,18 @@ static void *mbochs_kmap_dmabuf(struct dma_buf *buf, unsigned long page_num) return kmap(page); } +static void mbochs_kunmap_dmabuf(struct dma_buf *buf, unsigned long page_num, + void *vaddr) +{ + kunmap(vaddr); +} + static struct dma_buf_ops mbochs_dmabuf_ops = { .map_dma_buf = mbochs_map_dmabuf, .unmap_dma_buf = mbochs_unmap_dmabuf, .release = mbochs_release_dmabuf, .map = mbochs_kmap_dmabuf, + .unmap = mbochs_kunmap_dmabuf, .mmap = mbochs_mmap_dmabuf, };