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Baochen Qiang ca3c033a4f dma-mapping: fix missing clear bdr in check_ram_in_range_map()

[ Upstream commit 8324993f60 ]

As discussed in [1], if 'bdr' is set once, it would never get
cleared, hence 0 is always returned.

Refactor the range check hunk into a new helper dma_find_range(),
which allows 'bdr' to be cleared in each iteration.

Link: https://lore.kernel.org/all/64931fac-085b-4ff3-9314-84bac2fa9bdb@quicinc.com/ # [1]
Fixes: a409d96009 ("dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM")
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Link: https://lore.kernel.org/r/20250307030350.69144-1-quic_bqiang@quicinc.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-03-28 22:03:26 +01:00

coherent.c

dma-mapping: save base/size instead of pointer to shared DMA pool

2025-02-08 09:58:17 +01:00

contiguous.c

…

debug.c

dma-debug: fix a possible deadlock on radix_lock

2024-12-14 20:03:52 +01:00

debug.h

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direct.c