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Shane Francis 42e67b479e drm/prime: use dma length macro when mapping sg
As dma_map_sg can reorganize scatter-gather lists in a
way that can cause some later segments to be empty we should
always use the sg_dma_len macro to fetch the actual length.

This could now be 0 and not need to be mapped to a page or
address array

Fixes: be62dbf554 ("iommu/amd: Convert AMD iommu driver to the dma-iommu api")
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206461
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=206895
Bug: https://gitlab.freedesktop.org/drm/amd/issues/1056
Signed-off-by: Shane Francis <bigbeeshane@gmail.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200325090741.21957-2-bigbeeshane@gmail.com
Cc: stable@vger.kernel.org
2020-03-25 12:01:23 -04:00
arch
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Documentation dt-bindings: display: sunxi: Fix compatible 2020-02-12 18:32:22 +01:00
drivers drm/prime: use dma length macro when mapping sg 2020-03-25 12:01:23 -04:00
fs
include drm/shmem: add support for per object caching flags. 2020-02-27 13:54:38 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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