[PATCH RFC 2/4] drm/core: re-enable suspend/resume callbacks for KMS drivers

[Andrzej Hajda]

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 at 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);
 	}
-- 
1.9.1