Re: fix a layering violation in videobuf2 and improve dma_map_resource v2
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: 2019-02-01 07:05:30
Also in:
linux-iommu, linux-media, linuxppc-dev, lkml
Hi All, On 2019-01-18 12:37, Christoph Hellwig wrote:
Hi all, this series fixes a rather gross layering violation in videobuf2, which pokes into arm DMA mapping internals to get a DMA address for memory that does not have a page structure, and to do so fixes up the dma_map_resource implementation to not provide a somewhat dangerous default and improve the error handling. Changes since v1: - don't apply bus offsets in dma_direct_map_resource
Works fine on older Exynos based boards with IOMMU and CMA disabled. Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel