From: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> This patch has been added to the 3.12 stable tree. If you have any objections, please let us know. =============== commit 7e31210349e9e03a9a4dff31ab5f2bc83e8e84f5 upstream. IOMMU-based dma_mmap() implementation lacked proper support for offset parameter used in mmap call (it always assumed that mapping starts from offset zero). This patch adds support for offset parameter to IOMMU-based implementation. Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- arch/arm/mm/dma-mapping.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f817f3064d67..8f3375adfcf9 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1389,6 +1389,8 @@ static int arm_iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma, if (off >= nr_pages || (usize >> PAGE_SHIFT) > nr_pages - off) return -ENXIO; + pages += off; + do { int ret = vm_insert_page(vma, uaddr, *pages++); if (ret) { -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html