diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_runtime_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 16790f2576ec..b7924feb9f27 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -3328,18 +3328,19 @@ void intel_runtime_pm_get(struct drm_i915_private *dev_priv) * @dev_priv: i915 device instance * * This function grabs a device-level runtime pm reference if the device is - * already in use and ensures that it is powered up. + * already in use and ensures that it is powered up. It is illegal to try + * and access the HW should intel_runtime_pm_get_if_in_use() report failure. * * Any runtime pm reference obtained by this function must have a symmetric * call to intel_runtime_pm_put() to release the reference again. + * + * Returns: True if the wakeref was acquired, or False otherwise. */ bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv) { - struct pci_dev *pdev = dev_priv->drm.pdev; - struct device *kdev = &pdev->dev; - if (IS_ENABLED(CONFIG_PM)) { - int ret = pm_runtime_get_if_in_use(kdev); + struct pci_dev *pdev = dev_priv->drm.pdev; + struct device *kdev = &pdev->dev; /* * In cases runtime PM is disabled by the RPM core and we get @@ -3347,9 +3348,7 @@ bool intel_runtime_pm_get_if_in_use(struct drm_i915_private *dev_priv) * function, since the power state is undefined. This applies * atm to the late/early system suspend/resume handlers. */ - WARN_ONCE(ret < 0, - "pm_runtime_get_if_in_use() failed: %d\n", ret); - if (ret <= 0) + if (pm_runtime_get_if_in_use(kdev) <= 0) return false; } |