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drm/amdgpu: skip BAR resizing if the bios already did it

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No need to do it again.

Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-06-08 15:39:33 -04:00
parent df06583d1d
commit b7221f2b46
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -909,6 +909,11 @@ int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
if (amdgpu_sriov_vf(adev))
return 0;
/* skip if the bios has already enabled large BAR */
if (adev->gmc.real_vram_size &&
(pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size))
return 0;
/* Check if the root BUS has 64bit memory resources */
root = adev->pdev->bus;
while (root->parent)