media: saa7134: use sg_dma_len when building pgtable

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[ Upstream commit 4e1cb753c0 ]

The new AMD IOMMU DMA implementation concatenates sglist entries under
certain conditions, and because saa7134 accessed the length member
directly, it did not support this scenario.

This fixes IO_PAGE_FAULTs and choppy DMA audio by using the
sg_dma_len macro.

Fixes: be62dbf554 ("iommu/amd: Convert AMD iommu driver to the dma-iommu api")
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Tasos Sahanidis 2021-03-03 19:30:18 +01:00 • committed by Greg Kroah-Hartman

parent 385470a358

commit a250df336a

1 changed files with 1 additions and 1 deletions

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drivers/media/pci/saa7134/saa7134-core.c

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