Reviewed-by: Alex Deucher <[email protected]>
________________________________
From: amd-gfx <[email protected]> on behalf of Christian 
König <[email protected]>
Sent: Wednesday, February 20, 2019 7:47 AM
To: [email protected]; [email protected]
Subject: [PATCH] drm/amdgpu: fix dma mask check in gmc_v6_0.c

This got messed up by "drm: change func to better detect wether swiotlb
is needed".

Signed-off-by: Christian König <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 9fc3296592fe..98fd9208877f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -886,7 +886,7 @@ static int gmc_v6_0_sw_init(void *handle)
                 pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
                 dev_warn(adev->dev, "amdgpu: No coherent DMA available.\n");
         }
-       adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
+       adev->need_swiotlb = drm_need_swiotlb(dma_bits);

         r = gmc_v6_0_init_microcode(adev);
         if (r) {
--
2.17.1

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