From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Date: Thu, 13 Aug 2015 20:06:39 +0000 (-0300)
Subject: drm: WARN_ON if a modeset driver uses legacy suspend/resume helpers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bcfe0c0954f3336c44993e5ce444e09ad6087637;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm: WARN_ON if a modeset driver uses legacy suspend/resume helpers

Legacy s/r hooks are only used for shadow-attaching drivers, warn
when a KMS driver tries to use them.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 53d09a19f7e1..dc93c881f29d 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -566,6 +566,8 @@ struct drm_device *drm_dev_alloc(struct drm_driver *driver,
 		ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL);
 		if (ret)
 			goto err_minors;
+
+		WARN_ON(driver->suspend || driver->resume);
 	}
 
 	if (drm_core_check_feature(dev, DRIVER_RENDER)) {