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| author | Lijo Lazar <lijo.lazar@amd.com> | 2021-03-02 16:28:43 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-03-23 23:02:05 -0400 |
| commit | f78313fae91c33bf0d0622f5bebe5f72cbbd9d88 (patch) | |
| tree | c9d28d6665d659416ee953ad530afb1a9f15a226 /drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | |
| parent | a364782f490d4a1e36be8e26083c774dbb2bafde (diff) | |
| download | lwn-f78313fae91c33bf0d0622f5bebe5f72cbbd9d88.tar.gz lwn-f78313fae91c33bf0d0622f5bebe5f72cbbd9d88.zip | |
drm/amdgpu: Check if FB BAR is enabled for ROM read
Some configurations don't have FB BAR enabled. Avoid reading ROM image
from FB BAR region in such cases.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 4 |
1 files changed, 4 insertions, 0 deletions
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); |