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authorLiviu Dudau <Liviu.Dudau@arm.com>2017-11-10 13:33:10 +0000
committerNoralf Trønnes <noralf@tronnes.org>2017-11-15 18:14:46 +0100
commit998fb1a0f478b83492220ff79583bf9ad538bdd8 (patch)
tree2726e7460e19dbee07402dec75f13522b44c6502 /Documentation/devicetree/bindings/display
parent1f2d9bdc9085a4477a997344b17c40ba2a28d4e4 (diff)
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drm: gem_cma_helper.c: Allow importing of contiguous scatterlists with nents > 1
drm_gem_cma_prime_import_sg_table() will fail if the number of entries in the sg_table > 1. However, you can have a device that uses an IOMMU engine and can map a discontiguous buffer with multiple entries that have consecutive sg_dma_addresses, effectively making it contiguous. Allow for that scenario by testing the entries in the sg_table for contiguous coverage. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://patchwork.freedesktop.org/patch/msgid/20171110133310.1225-1-Liviu.Dudau@arm.com
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