[Nouveau] [RFC PATCH 11/29] debugfs: Wake up GPU before doing any reclocking

Karol Herbst
2017-09-15T17:11:11Z

Fixes various reclocking related issues on prime systems

Signed-off-by: Karol Herbst <karolherbst at gmail.com>
---
 drm/nouveau/nouveau_debugfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drm/nouveau/nouveau_debugfs.c b/drm/nouveau/nouveau_debugfs.c
index 27281c4e..b0a598f9 100644
--- a/drm/nouveau/nouveau_debugfs.c
+++ b/drm/nouveau/nouveau_debugfs.c
@@ -160,7 +160,11 @@ nouveau_debugfs_pstate_set(struct file *file, const char
__user *ubuf,
 		args.ustate = value;
 	}

+	ret = pm_runtime_get_sync(drm->dev);
+	if (IS_ERR_VALUE(ret) && ret != -EACCES)
+		return ret;
 	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
+	pm_runtime_put_autosuspend(drm->dev);
 	if (ret < 0)
 		return ret;

--
2.14.1