On 04/12/15 03:24, Wang Hongcheng wrote:
Because amd iommu and software iommu need this mask.For example,
if we use software iommu without this mask, we will
get 'Out of SW-IOMMU space' error, when calling swiotlb_map_page
function.
The commit title doesn't match the code, but either way this patch
should now be unnecessary: 002edb6f6f2a ("dma-mapping: tidy up dma_parms
default handling") resolves the problem at its source, and is already in
4.4-rc1.
(Incidentally, it was specifically the same PL330/SWIOTLB combination
that led to that patch in the first place)
Robin.
Signed-off-by: Wan Zongshun <vincent....@amd.com>
Signed-off-by: Wang Hongcheng <annie.w...@amd.com>
---
drivers/dma/pl330.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 9d7af0d..fb46fdf 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2966,6 +2966,10 @@ pl330_probe(struct amba_device *adev, const struct
amba_id *id)
if (ret)
dev_err(&adev->dev, "unable to set the seg size\n");
+ dev_info(&adev->dev, "set the seg boundary\n");
+ ret = dma_set_seg_boundary(&adev->dev, 0xffffffff);
+ if (ret)
+ dev_err(&adev->dev, "unable to set the seg boundary\n");
dev_info(&adev->dev,
"Loaded driver for PL330 DMAC-%x\n", adev->periphid);
--
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