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authorMario Limonciello <[email protected]>2023-09-26 17:59:53 -0500
committerAlex Deucher <[email protected]>2023-10-04 22:52:05 -0400
commit134b8c5d8674e7cde380f82e9aedfd46dcdd16f7 (patch)
treec5ebbc71afb1bf98718a3ad06714c93202e850ed
parent2a1fe39a5be785e962e387146aed34fa9a829f3f (diff)
drm/amd: Fix detection of _PR3 on the PCIe root port
On some systems with Navi3x dGPU will attempt to use BACO for runtime PM but fails to resume properly. This is because on these systems the root port goes into D3cold which is incompatible with BACO. This happens because in this case dGPU is connected to a bridge between root port which causes BOCO detection logic to fail. Fix the intent of the logic by looking at root port, not the immediate upstream bridge for _PR3. Cc: [email protected] Suggested-by: Jun Ma <[email protected]> Tested-by: David Perry <[email protected]> Fixes: b10c1c5b3a4e ("drm/amdgpu: add check for ACPI power resources") Signed-off-by: Mario Limonciello <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_device.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 30c4f5cca02c..2b8356699f23 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2093,7 +2093,7 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
adev->flags |= AMD_IS_PX;
if (!(adev->flags & AMD_IS_APU)) {
- parent = pci_upstream_bridge(adev->pdev);
+ parent = pcie_find_root_port(adev->pdev);
adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
}