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dma-buf: drop dynamic_mapping flag

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Instead use the pin() callback to detect dynamic DMA-buf handling.
Since amdgpu is now migrated it doesn't make much sense to keep
the extra flag.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/353997/?series=73646&rev=1
This commit is contained in:
Christian König
2020-02-18 16:57:24 +01:00
parent a448cb003e
commit bd2275eeed
3 changed files with 7 additions and 20 deletions
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21
include/linux/dma-buf.h
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@@ -42,18 +42,6 @@ struct dma_buf_ops {
*/
bool cache_sgt_mapping;
/**
* @dynamic_mapping:
*
* If true the framework makes sure that the map/unmap_dma_buf
* callbacks are always called with the dma_resv object locked.
*
* If false the framework makes sure that the map/unmap_dma_buf
* callbacks are always called without the dma_resv object locked.
* Mutual exclusive with @cache_sgt_mapping.
*/
bool dynamic_mapping;
/**
* @attach:
*
@@ -99,7 +87,8 @@ struct dma_buf_ops {
* This is called by dma_buf_pin and lets the exporter know that the
* DMA-buf can't be moved any more.
*
* This is called with the dmabuf->resv object locked.
* This is called with the dmabuf->resv object locked and is mutual
* exclusive with @cache_sgt_mapping.
*
* This callback is optional and should only be used in limited use
* cases like scanout and not for temporary pin operations.
@@ -116,7 +105,8 @@ struct dma_buf_ops {
* This is called by dma_buf_unpin and lets the exporter know that the
* DMA-buf can be moved again.
*
* This is called with the dmabuf->resv object locked.
* This is called with the dmabuf->resv object locked and is mutual
* exclusive with @cache_sgt_mapping.
*
* This callback is optional.
*/
@@ -455,8 +445,7 @@ static inline void get_dma_buf(struct dma_buf *dmabuf)
*/
static inline bool dma_buf_is_dynamic(struct dma_buf *dmabuf)
{
/* TODO: switch to using pin/unpin functions as indicator. */
return dmabuf->ops->dynamic_mapping;
return !!dmabuf->ops->pin;
}
/**