ARM: dma-mapping: fix error path for memory allocation failure · 9fa8af91f0 - Gogs

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: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

Marek Szyprowski 13 years ago

parent

50262a4bf3

commit

9fa8af91f0

1 changed files with 1 additions and 1 deletions

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							+ 1
							
							- 1
						
arch/arm/mm/dma-mapping.c
							 
								View File
							
				@@ -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)