Kaveri has no upstream bridge, therefore parent is NULL.
$ lspci -PP
...
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Kaveri [Radeon R7 Graphics] (rev d4)
For comparison, Raphael:
$ lspci -PP
...
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Raphael/Granite Ridge
Internal GPP Bridge to Bus [C:A]
...
00:08.1/0e:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Raphael (rev c5)
Fixes: e5e203e0cd53 ("drm/amdgpu: Save and restore switch state")
Link:
https://lore.kernel.org/amd-gfx/[email protected]/
Signed-off-by: John Olender <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 7783272a7930..ca58cde66446 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -7148,7 +7148,7 @@ static void amdgpu_device_cache_switch_state(struct
amdgpu_device *adev)
struct pci_dev *parent = pci_upstream_bridge(adev->pdev);
int r;
- if (parent->vendor != PCI_VENDOR_ID_ATI)
+ if (!parent || parent->vendor != PCI_VENDOR_ID_ATI)
return;
/* If already saved, return */
base-commit: 035edba1e204b302ae74269d4f09e355153a79ac
--
2.47.2
