During panel removal or system shutdown panel_simple_disable is called
which disables the panel backlight but the panel is still powered due to
missing calls to panel_simple_unprepare.
Fixes: d02fd93e2cd8 ("drm/panel: simple - Disable panel on shutdown")
Cc: stable@xxxxxxxxxxxxxxx # v3.16+
Signed-off-by: Jonathan Liu <net147@xxxxxxxxx>
---
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 474fa759e06e..234af81fb3d0 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -369,6 +369,7 @@ static int panel_simple_remove(struct device *dev)
drm_panel_remove(&panel->base);
panel_simple_disable(&panel->base);
+ panel_simple_unprepare(&panel->base);
if (panel->ddc)
put_device(&panel->ddc->dev);
@@ -384,6 +385,7 @@ static void panel_simple_shutdown(struct device *dev)
struct panel_simple *panel = dev_get_drvdata(dev);
panel_simple_disable(&panel->base);
+ panel_simple_unprepare(&panel->base);
}
static const struct drm_display_mode ampire_am_480272h3tmqw_t01h_mode = {
--
2.13.2
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