diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 19 |
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); } } |