dma_common_contiguous_remap() is used to remap an "allocated contiguous region". Within a single allocation, there is no need to use nth_page() anymore.
Neither the buddy, nor hugetlb, nor CMA will hand out problematic page ranges.
Acked-by: Marek Szyprowski m.szyprowski@samsung.com Reviewed-by: Lorenzo Stoakes lorenzo.stoakes@oracle.com Cc: Robin Murphy robin.murphy@arm.com Signed-off-by: David Hildenbrand david@redhat.com --- kernel/dma/remap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c index 9e2afad1c6152..b7c1c0c92d0c8 100644 --- a/kernel/dma/remap.c +++ b/kernel/dma/remap.c @@ -49,7 +49,7 @@ void *dma_common_contiguous_remap(struct page *page, size_t size, if (!pages) return NULL; for (i = 0; i < count; i++) - pages[i] = nth_page(page, i); + pages[i] = page++; vaddr = vmap(pages, count, VM_DMA_COHERENT, prot); kvfree(pages);