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dma-buf: Move dma_buf_map_attachment() to dynamic locking specification

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Move dma-buf attachment mapping functions to the dynamic locking
specification by asserting that the reservation lock is held.

Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221017172229.42269-18-dmitry.osipenko@collabora.com
This commit is contained in:
Dmitry Osipenko 2022-10-17 20:22:25 +03:00
parent 809d9c72c2
commit 47e982d519
1 changed files with 2 additions and 8 deletions
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10
drivers/dma-buf/dma-buf.c
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@ -1038,8 +1038,7 @@ struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
if (WARN_ON(!attach || !attach->dmabuf))
return ERR_PTR(-EINVAL);
if (dma_buf_attachment_is_dynamic(attach))
dma_resv_assert_held(attach->dmabuf->resv);
dma_resv_assert_held(attach->dmabuf->resv);
if (attach->sgt) {
/*
@ -1054,7 +1053,6 @@ 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 (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
r = attach->dmabuf->ops->pin(attach);
if (r)
@ -1143,15 +1141,11 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
return;
if (dma_buf_attachment_is_dynamic(attach))
dma_resv_assert_held(attach->dmabuf->resv);
dma_resv_assert_held(attach->dmabuf->resv);
if (attach->sgt == sg_table)
return;
if (dma_buf_is_dynamic(attach->dmabuf))
dma_resv_assert_held(attach->dmabuf->resv);
__unmap_dma_buf(attach, sg_table, direction);
if (dma_buf_is_dynamic(attach->dmabuf) &&