dma-mapping: Add helpers for dma_range_map bounds

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Several places want to compute the lower and/or upper bounds of a
dma_range_map, so let's factor that out into reusable helpers.

Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com> # For arm64
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/45ec52f033ec4dfb364e23f48abaf787f612fa53.1713523152.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Robin Murphy 2024-04-19 17:54:43 +01:00 • committed by Joerg Roedel

parent 91cfd679f9

commit fece6530bf

4 changed files with 23 additions and 23 deletions

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9

arch/loongarch/kernel/dma.c

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8

drivers/acpi/arm64/dma.c

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11

drivers/of/device.c

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18

include/linux/dma-direct.h

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