Implementing suspend/resume functionality in componentized drm drivers using master component PM callbacks is problematic because those callbacks can be called asynchronously regardless of existence/state of drm device. The patch re-enables suspend/resume drm driver callbacks in drivers with modeset feature enabled. These callback can be used to implement suspend/resume functionality in more convenient way.
The patch should not affect behavior of existing drm drivers.
Signed-off-by: Andrzej Hajda a.hajda@samsung.com --- drivers/gpu/drm/drm_sysfs.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index cc3d6d6..206afc4 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -45,7 +45,6 @@ static int __drm_class_suspend(struct device *dev, pm_message_t state) struct drm_device *drm_dev = drm_minor->dev;
if (drm_minor->type == DRM_MINOR_LEGACY && - !drm_core_check_feature(drm_dev, DRIVER_MODESET) && drm_dev->driver->suspend) return drm_dev->driver->suspend(drm_dev, state); } @@ -86,7 +85,6 @@ static int drm_class_resume(struct device *dev) struct drm_device *drm_dev = drm_minor->dev;
if (drm_minor->type == DRM_MINOR_LEGACY && - !drm_core_check_feature(drm_dev, DRIVER_MODESET) && drm_dev->driver->resume) return drm_dev->driver->resume(drm_dev); }