drm/i915: Prevent the system suspend complete optimization

[karo-tx-linux.git] / drivers / gpu / drm / i915 / i915_drv.c

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 3536f1a7f5dac14a39c96f06a0c4d22ccb11616c..2fdfaf135ea9bfa36d3193e854ba695ae88cc8f1 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1242,6 +1242,15 @@ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
                goto out_fini;
 
        pci_set_drvdata(pdev, &dev_priv->drm);
+       /*
+        * Disable the system suspend direct complete optimization, which can
+        * leave the device suspended skipping the driver's suspend handlers
+        * if the device was already runtime suspended. This is needed due to
+        * the difference in our runtime and system suspend sequence and
+        * becaue the HDA driver may require us to enable the audio power
+        * domain during system suspend.
+        */
+       pdev->dev_flags |= PCI_DEV_FLAGS_NEEDS_RESUME;
 
        ret = i915_driver_init_early(dev_priv, ent);
        if (ret < 0)