diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pci.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pm.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pm.h | 1 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 71be80274683..96f1ee1ea17f 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -617,6 +617,7 @@ static int xe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (IS_ERR(xe)) return PTR_ERR(xe); + xe_pm_assert_unbounded_bridge(xe); subplatform_desc = find_subplatform(xe, desc); err = xe_info_init(xe, desc, subplatform_desc); diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index 9a74d15052c4..20e9e522ab80 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -214,3 +214,17 @@ int xe_pm_runtime_get_if_active(struct xe_device *xe) WARN_ON(pm_runtime_suspended(xe->drm.dev)); return pm_runtime_get_if_active(xe->drm.dev, true); } + +void xe_pm_assert_unbounded_bridge(struct xe_device *xe) +{ + struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + struct pci_dev *bridge = pci_upstream_bridge(pdev); + + if (!bridge) + return; + + if (!bridge->driver) { + drm_warn(&xe->drm, "unbounded parent pci bridge, device won't support any PM support.\n"); + device_set_pm_not_required(&pdev->dev); + } +} diff --git a/drivers/gpu/drm/xe/xe_pm.h b/drivers/gpu/drm/xe/xe_pm.h index 6a885585f653..8418ee6faac5 100644 --- a/drivers/gpu/drm/xe/xe_pm.h +++ b/drivers/gpu/drm/xe/xe_pm.h @@ -21,5 +21,6 @@ int xe_pm_runtime_get(struct xe_device *xe); int xe_pm_runtime_put(struct xe_device *xe); bool xe_pm_runtime_resume_if_suspended(struct xe_device *xe); int xe_pm_runtime_get_if_active(struct xe_device *xe); +void xe_pm_assert_unbounded_bridge(struct xe_device *xe); #endif |