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path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_device.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 861ccff78af9..932dc93b2e63 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5944,13 +5944,18 @@ static void amdgpu_device_partner_bandwidth(struct amdgpu_device *adev,
*speed = PCI_SPEED_UNKNOWN;
*width = PCIE_LNK_WIDTH_UNKNOWN;
- while ((parent = pci_upstream_bridge(parent))) {
- /* skip upstream/downstream switches internal to dGPU*/
- if (parent->vendor == PCI_VENDOR_ID_ATI)
- continue;
- *speed = pcie_get_speed_cap(parent);
- *width = pcie_get_width_cap(parent);
- break;
+ if (amdgpu_device_pcie_dynamic_switching_supported(adev)) {
+ while ((parent = pci_upstream_bridge(parent))) {
+ /* skip upstream/downstream switches internal to dGPU*/
+ if (parent->vendor == PCI_VENDOR_ID_ATI)
+ continue;
+ *speed = pcie_get_speed_cap(parent);
+ *width = pcie_get_width_cap(parent);
+ break;
+ }
+ } else {
+ /* use the current speeds rather than max if switching is not supported */
+ pcie_bandwidth_available(adev->pdev, NULL, speed, width);
}
}