Patch "drm/panel: simple: Add missing panel_simple_unprepare() calls" has been added to the 3.18-stable tree

Patch "drm/panel: simple: Add missing panel_simple_unprepare() calls" has been added to the 3.18-stable tree

[gregkh]

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 3.18-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-panel-simple-add-missing-panel_simple_unprepare-calls.patch
and it can be found in the queue-3.18 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@gmail.com
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
@@ -312,6 +312,7 @@ 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);
@@ -327,6 +328,7 @@ 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 auo_b101aw03_mode = {


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

queue-3.18/drm-panel-simple-add-missing-panel_simple_unprepare-calls.patch