[PATCH 5.14 527/849] drm/amdgpu/gmc6: fix DMA mask from 44 to 40 bits

Greg Kroah-Hartman
2021-11-16T01:26:28Z

From: Alex Deucher <alexander.deucher@amd.com>

[ Upstream commit 403475be6d8b122c3e6b8a47e075926d7299e5ef ]

The DMA mask on SI parts is 40 bits not 44. Copy
paste typo.

Fixes: 244511f386ccb9 ("drm/amdgpu: simplify and cleanup setting the dma mask")
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1762
Acked-by: Christian König <christian.koenig@amd.com>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 0e81e03e9b498..0fe714f54cca9 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -841,12 +841,12 @@ static int gmc_v6_0_sw_init(void *handle)

adev->gmc.mc_mask = 0xffffffffffULL;

- r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
+ r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(40));
if (r) {
dev_warn(adev->dev, "No suitable DMA available.\n");
return r;
}
- adev->need_swiotlb = drm_need_swiotlb(44);
+ adev->need_swiotlb = drm_need_swiotlb(40);

r = gmc_v6_0_init_microcode(adev);
if (r) {
--
2.33.0