This is a note to let you know that I've just added the patch titled

drm/panel: simple: Add missing panel_simple_unprepare() calls

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: drm-panel-simple-add-missing-panel_simple_unprepare-calls.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From f3621a8eb59a913612c8e6e37d81f16b649f8b6c Mon Sep 17 00:00:00 2001

From: Jonathan Liu net147@gmail.com Date: Mon, 7 Aug 2017 21:55:45 +1000 Subject: drm/panel: simple: Add missing panel_simple_unprepare() calls

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 @@ -369,6 +369,7 @@ 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); @@ -384,6 +385,7 @@ 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 = {

Patches currently in stable-queue which might be from net147@gmail.com are

queue-4.9/drm-panel-simple-add-missing-panel_simple_unprepare-calls.patch