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dma-buf: fix stale @lock references in struct dma_buf documentation

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The kernel-doc comments for vmapping_counter and vmap_ptr in struct
dma_buf reference "@lock" as the protecting lock, but struct dma_buf
no longer has a "lock" member. The mutex was removed in favor of using
the dma_resv lock exclusively. The implementation correctly uses
dma_resv_assert_held(dmabuf->resv) in dma_buf_vmap() and
dma_buf_vunmap(), so update the documentation to reference @resv
instead.

Signed-off-by: gaoxiang17 <gaoxiang17@xiaomi.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20260415054101.535520-1-gxxa03070307@gmail.com
This commit is contained in:
Xiang Gao 2026-04-15 13:41:01 +08:00 committed by Christian König
parent 2fc87d37be
commit 0b13173d27
1 changed files with 2 additions and 2 deletions
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4
include/linux/dma-buf.h
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@ -322,13 +322,13 @@ struct dma_buf {
* @vmapping_counter:
*
* Used internally to refcnt the vmaps returned by dma_buf_vmap().
* Protected by @lock.
* Protected by @resv.
*/
unsigned vmapping_counter;
/**
* @vmap_ptr:
* The current vmap ptr if @vmapping_counter > 0. Protected by @lock.
* The current vmap ptr if @vmapping_counter > 0. Protected by @resv.
*/
struct iosys_map vmap_ptr;