Messages in this thread Patch in this message | | | From | Eugeniy Paltsev <> | Subject | [PATCH] etnaviv: setup missing dma_mask | Date | Thu, 23 Aug 2018 19:38:39 +0300 |
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As for today etnaviv device doesn't setup dma_mask. The etnaviv device is a virtual device not represented in DT so missing dma_mask isn't setup by generic plaform code (by of_dma_configure function).
Missing dma_mask causes fails in some dma cache ops functions. For example it causes fails on map_* operations in generic dma_noncoherent_ops and dma_direct_ops.
We faced with this behaviour after switching ARC to generic dma_noncoherent cache ops using.
So fix this by setting dma_mask via dma_coerce_mask_and_coherent()
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> --- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index 540b59fb4103..69d80937e021 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -593,7 +593,7 @@ static int etnaviv_pdev_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct component_match *match = NULL; - dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); + dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (!dev->platform_data) { struct device_node *core_node; -- 2.14.4
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