4.4-stable review patch. If anyone has any objections, please let me know.
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From: Jonathan Liu net147@gmail.com
commit f3621a8eb59a913612c8e6e37d81f16b649f8b6c upstream.
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") Signed-off-by: Jonathan Liu net147@gmail.com Signed-off-by: Thierry Reding treding@nvidia.com Link: https://patchwork.freedesktop.org/patch/msgid/20170807115545.27747-1-net147@... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/panel/panel-simple.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -352,6 +352,7 @@ static int panel_simple_remove(struct de drm_panel_remove(&panel->base);
panel_simple_disable(&panel->base); + panel_simple_unprepare(&panel->base);
if (panel->ddc) put_device(&panel->ddc->dev); @@ -367,6 +368,7 @@ static void panel_simple_shutdown(struct 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_am800480r3tmqwa1h_mode = {