[AMD Public Use] Some configurations don't have FB BAR enabled. Avoid reading ROM image from FB BAR region in such cases.
Signed-off-by: Lijo Lazar <[email protected]<mailto:[email protected]>> Reviewed-by: Hawking Zhang <[email protected]<mailto:[email protected]>> Reviewed-by: Feifei Xu <[email protected]<mailto:[email protected]>> --- drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index efdf639f6593..f454a6bd0ed6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -97,6 +97,10 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev) if (amdgpu_device_need_post(adev)) return false; + /* FB BAR not enabled */ + if (pci_resource_len(adev->pdev, 0) == 0) + return false; + adev->bios = NULL; vram_base = pci_resource_start(adev->pdev, 0); bios = ioremap_wc(vram_base, size); -- 2.29.2
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