From: Christian König <christian.koenig@amd.com>
Date: Wed, 20 Feb 2019 12:46:24 +0000 (+0100)
Subject: drm/amdgpu: fix dma mask check in gmc_v6_0.c
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=1fdafbd023793e754aa6ca73c877a375e83b8239;p=openwrt%2Fstaging%2Fblogic.git

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 <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michael D Labriola <michael.d.labriola@gmail.com>
Link: https://patchwork.freedesktop.org/patch/287070/
---

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) {