diff options
| author | Yu Zhao <yuzhao@google.com> | 2018-12-05 01:42:52 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-12-06 15:53:04 +0300 |
| commit | d6d08273996b3363178b920ccfa74acabaf67963 (patch) | |
| tree | db0aa557c36a9b2ab3b262a0d2bb9462b27cf012 /sound/soc/amd/acp.h | |
| parent | 20f2ab247d3b787af91c1aa5eb27c5061744c154 (diff) | |
| download | linux-d6d08273996b3363178b920ccfa74acabaf67963.tar.xz | |
ASoC: use DMA addr rather than CPU pa for acp_audio_dma
We shouldn't assume CPU physical address we get from page_to_phys()
is same as DMA address we get from dma_alloc_coherent(). On x86_64,
we won't run into any problem with the assumption when dma_ops is
nommu_dma_ops. However, DMA address is IOVA when IOMMU is enabled.
And it's most likely different from CPU physical address when AMD
IOMMU is not in passthrough mode.
Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/amd/acp.h')
| -rw-r--r-- | sound/soc/amd/acp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h index dbbb1a85638d..e5ab6c6040a6 100644 --- a/sound/soc/amd/acp.h +++ b/sound/soc/amd/acp.h @@ -123,7 +123,7 @@ enum acp_dma_priority_level { }; struct audio_substream_data { - struct page *pg; + dma_addr_t dma_addr; unsigned int order; u16 num_of_pages; u16 i2s_instance; |