linux-kernel - [PATCH] drm/panel: simple: Add missing panel_simple

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Message-Id: <20170807115545.27747-1-net147@gmail.com>
Date:   Mon,  7 Aug 2017 21:55:45 +1000
From:   Jonathan Liu <net147@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Jonathan Liu <net147@...il.com>
Subject: [PATCH] drm/panel: simple: Add missing panel_simple_unprepare calls

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@...r.kernel.org # v3.16+
Signed-off-by: Jonathan Liu <net147@...il.com>
---
 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