| commit | aeeda19db4ab8b8e5bf653835058728ebe26909f | |
| author | Shane Francis <bigbeeshane@gmail.com> | |
| Wed, 25 Mar 2020 09:07:41 +0000 (25 09:07 +0000) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Wed, 1 Apr 2020 09:00:10 +0000 (1 11:00 +0200) | ||
| tree | 7f8e5a0d76846a3ab2bb450b7ccf71ae3544ed24 | treesnapshot (tar.gz zip) |
| parent | 834de33d3c387345a4eb7511d039742fa91f87c5 | commitdiff |
drm/radeon: fix scatter-gather mapping with user pages
commit 47f7826c520ecd92ffbffe59ecaa2fe61e42ec70 upstream.
Calls to dma_map_sg may return less segments / entries than requested
if they fall on page bounderies. The old implementation did not
support this use case.
Fixes: be62dbf554c5 ("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/20200325090741.21957-4-bigbeeshane@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 47f7826c520ecd92ffbffe59ecaa2fe61e42ec70 upstream.
Calls to dma_map_sg may return less segments / entries than requested
if they fall on page bounderies. The old implementation did not
support this use case.
Fixes: be62dbf554c5 ("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/20200325090741.21957-4-bigbeeshane@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/gpu/drm/radeon/radeon_ttm.c | diffblobblamehistory |