[2/2] debugfs: Wake up GPU before doing any reclocking

Submitted by Karol Herbst on July 14, 2018, 10:52 a.m.

Details

Message ID 20180714105209.2528-3-kherbst@redhat.com
State New
Headers show
Series "Some minor reclocking fixes" ( rev: 1 ) in Nouveau

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Commit Message

Karol Herbst July 14, 2018, 10:52 a.m.
From: Karol Herbst <karolherbst@gmail.com>

Fixes various reclocking related issues on prime systems.

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Martin Peres <martin.peres@free.fr>
---
 drm/nouveau/nouveau_debugfs.c | 4 ++++
 1 file changed, 4 insertions(+)

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diff --git a/drm/nouveau/nouveau_debugfs.c b/drm/nouveau/nouveau_debugfs.c
index 963a4dba..9109b69c 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;