From c947f69fff183e5d2a06160d9262b5dab7359e95 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 3 Nov 2010 16:00:15 +0000 Subject: ARM: Fix DMA coherent allocator alignment MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit An out by one bug meant that the DMA coherent allocator was aligning to one more bit than it should, causing it to run out of available memory quicker. Fix this. Reported-by: Petr Štetiar Signed-off-by: Russell King --- arch/arm/mm/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index e4dd064..ac6a361 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -198,7 +198,7 @@ __dma_alloc_remap(struct page *page, size_t size, gfp_t gfp, pgprot_t prot) * fragmentation of the DMA space, and also prevents allocations * smaller than a section from crossing a section boundary. */ - bit = fls(size - 1) + 1; + bit = fls(size - 1); if (bit > SECTION_SHIFT) bit = SECTION_SHIFT; align = 1 << bit; -- cgit v1.1