The PM Runtime docs specifically call out the need to call
pm_runtime_dont_use_autosuspend() in the remove() callback if
pm_runtime_use_autosuspend() was called in probe():
> Drivers in ->remove() callback should undo the runtime PM changes done
> in ->probe(). Usually this means calling pm_runtime_disable(),
> pm_runtime_dont_use_autosuspend() etc.
We should do this. This fixes a warning splat that I saw when I was
testing out the panel-simple's remove().
Fixes: 3235b0f20a0a ("drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare")
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
Changes in v7:
- pm_runtime_dont_use_autosuspend() fix new for v7.
drivers/gpu/drm/panel/panel-simple.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9be050ab372f..21939d4352cf 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -798,6 +798,7 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
return 0;
disable_pm_runtime:
+ pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
free_ddc:
if (panel->ddc)
@@ -814,6 +815,7 @@ static int panel_simple_remove(struct device *dev)
drm_panel_disable(&panel->base);
drm_panel_unprepare(&panel->base);
+ pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
if (panel->ddc)
put_device(&panel->ddc->dev);
--
2.31.1.751.gd2f1c929bd-goog
