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authorChristian König <christian.koenig@amd.com>2020-02-19 13:32:43 +0100
committerChristian König <christian.koenig@amd.com>2020-02-27 14:58:01 +0100
commit4981cdb063e3e94340d94338ab843bc7d80922d4 (patch)
tree248245404ab4e3e1f1ad402555b3bddf383e0e7d /drivers/dma-buf
parentbd2275eeed5b2d33eb7718e3562bf39e46ee64d1 (diff)
downloadlinux-4981cdb063e3e94340d94338ab843bc7d80922d4.tar.gz
dma-buf: make move_notify mandatory if importer_ops are provided
This makes the move_notify callback mandatory when the importer_ops are provided. Since amdgpu is now migrated it doesn't make much sense anymore to allow this. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/353995/?series=73646&rev=1
Diffstat (limited to 'drivers/dma-buf')
-rw-r--r--drivers/dma-buf/dma-buf.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 6d0a82d1b23d..f4ace9af2191 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -677,10 +677,12 @@ dma_buf_dynamic_attach(struct dma_buf *dmabuf, struct device *dev,
struct dma_buf_attachment *attach;
int ret;
- /* TODO: make move_notify mandatory if importer_ops are provided. */
if (WARN_ON(!dmabuf || !dev))
return ERR_PTR(-EINVAL);
+ if (WARN_ON(importer_ops && !importer_ops->move_notify))
+ return ERR_PTR(-EINVAL);
+
attach = kzalloc(sizeof(*attach), GFP_KERNEL);
if (!attach)
return ERR_PTR(-ENOMEM);
@@ -877,8 +879,7 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
if (dma_buf_is_dynamic(attach->dmabuf)) {
dma_resv_assert_held(attach->dmabuf->resv);
- if (!attach->importer_ops->move_notify ||
- !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
+ if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
r = dma_buf_pin(attach);
if (r)
return ERR_PTR(r);
@@ -890,8 +891,7 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
sg_table = ERR_PTR(-ENOMEM);
if (IS_ERR(sg_table) && dma_buf_is_dynamic(attach->dmabuf) &&
- (!attach->importer_ops->move_notify ||
- !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)))
+ !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY))
dma_buf_unpin(attach);
if (!IS_ERR(sg_table) && attach->dmabuf->ops->cache_sgt_mapping) {
@@ -934,8 +934,7 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
attach->dmabuf->ops->unmap_dma_buf(attach, sg_table, direction);
if (dma_buf_is_dynamic(attach->dmabuf) &&
- (!attach->importer_ops->move_notify ||
- !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)))
+ !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY))
dma_buf_unpin(attach);
}
EXPORT_SYMBOL_GPL(dma_buf_unmap_attachment);
@@ -955,7 +954,7 @@ void dma_buf_move_notify(struct dma_buf *dmabuf)
dma_resv_assert_held(dmabuf->resv);
list_for_each_entry(attach, &dmabuf->attachments, node)
- if (attach->importer_ops && attach->importer_ops->move_notify)
+ if (attach->importer_ops)
attach->importer_ops->move_notify(attach);
}
EXPORT_SYMBOL_GPL(dma_buf_move_notify);