linux

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History

Nicolin Chen f46cc01525 dma-contiguous: page-align the size in dma_free_contiguous()

According to the original dma_direct_alloc_pages() code:
{
	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;

	if (!dma_release_from_contiguous(dev, page, count))
		__free_pages(page, get_order(size));
}

The count parameter for dma_release_from_contiguous() was page
aligned before the right-shifting operation, while the new API
dma_free_contiguous() forgets to have PAGE_ALIGN() at the size.

So this patch simply adds it to prevent any corner case.

Fixes: fdaeec198ada ("dma-contiguous: add dma_{alloc,free}_contiguous() helpers")
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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: page-align the size in dma_free_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