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 <h...@lst.de>
Signed-off-by: Eugeniy Paltsev <eugeniy.palt...@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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