On 30.09.21 03:30, Mike Rapoport wrote:
From: Mike Rapoport <[email protected]>
dma_map_resource() uses pfn_valid() to ensure the range is not RAM.
However, pfn_valid() only checks for availability of the memory map for a
PFN but it does not ensure that the PFN is actually backed by RAM.
As dma_map_resource() is the only method in DMA mapping APIs that has this
check, simply drop the pfn_valid() test from dma_map_resource().
Link: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Mike Rapoport <[email protected]>
---
Acked-by: David Hildenbrand <[email protected]>
--
Thanks,
David / dhildenb
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