| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 134/173] drm/nouveau/debugfs: Wake up GPU before doing any reclocking | Date | Mon, 24 Sep 2018 13:52:48 +0200 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Karol Herbst <karolherbst@gmail.com>
[ Upstream commit eaeb9010bb4bcdc20e58254fa42f3fe730a7f908 ]
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> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c @@ -160,7 +160,11 @@ nouveau_debugfs_pstate_set(struct file * 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;
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