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Nicolin Chen c6622a425a dma-contiguous: do not overwrite align in dma_alloc_contiguous()

The dma_alloc_contiguous() limits align at CONFIG_CMA_ALIGNMENT for
cma_alloc() however it does not restore it for the fallback routine.
This will result in a size mismatch between the allocation and free
when running into the fallback routines after cma_alloc() fails, if
the align is larger than CONFIG_CMA_ALIGNMENT.

This patch adds a cma_align to take care of cma_alloc() and prevent
the align from being overwritten.

Fixes: fdaeec198ada ("dma-contiguous: add dma_{alloc,free}_contiguous() helpers")
Reported-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

2019-07-29 09:50:04 +03:00

coherent.c

dma-mapping: remove the DMA_MEMORY_EXCLUSIVE flag

2019-02-20 07:27:00 -07:00

contiguous.c

dma-contiguous: do not overwrite align in dma_alloc_contiguous()

2019-07-29 09:50:04 +03:00

debug.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333

2019-06-05 17:37:06 +02:00

direct.c

dma-direct: correct the physical addr in dma_direct_sync_sg_for_cpu/device