mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

drm/panel: panel-simple: Add missing pm_runtime_dont_use_autosuspend() calls 

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: 3235b0f20a ("drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210517130450.v7.1.I9e947183e95c9bd067c9c1d51208ac6a96385139@changeid
This commit is contained in:
Douglas Anderson 2021-05-17 13:08:58 -07:00
parent 257d36d493
commit a596fcd9cb
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/panel/panel-simple.c
View File

@ -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);