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Commit 9fa8af91 authored by Marek Szyprowski's avatar Marek Szyprowski
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ARM: dma-mapping: fix error path for memory allocation failure 



This patch fixes incorrect check in error path. When the allocation of
first page fails, the kernel ops appears due to accessing -1 element of
the pages array.

Reported-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
parent 50262a4b

arch/arm/mm/dma-mapping.c

+1 −1
Original line number Diff line number Diff line
@@ -961,7 +961,7 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size, gfp_t 


	return pages;

error:

	while (--i)

	while (i--)

		if (pages[i])

			__free_pages(pages[i], 0);

	if (array_size <= PAGE_SIZE)