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Baochen Qiang
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/[email protected]/ # [1]
Fixes: a409d96009 ("dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM")
Suggested-by: Christoph Hellwig <[email protected]>
Signed-off-by: Baochen Qiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Marek Szyprowski <[email protected]>