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@chromium.org ---
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);