dma-buf: Add unlocked variant of attachment-mapping functions

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[ Upstream commit 19d6634d87 ]

Add unlocked variant of dma_buf_map/unmap_attachment() that will
be used by drivers that don't take the reservation lock explicitly.

Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221017172229.42269-3-dmitry.osipenko@collabora.com
Stable-dep-of: a2cb9cd6a3 ("misc: fastrpc: Fix incorrect DMA mapping unmap request")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Dmitry Osipenko 2022-10-17 20:22:10 +03:00 • committed by Greg Kroah-Hartman

parent 6ca28642dd

commit b4539ff7a4

2 changed files with 59 additions and 0 deletions

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53

drivers/dma-buf/dma-buf.c

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6

include/linux/dma-buf.h

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