From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Liu , Thierry Reding Subject: [PATCH 4.9 31/38] drm/panel: simple: Add missing panel_simple_unprepare() calls Date: Mon, 4 Dec 2017 17:00:11 +0100 Message-Id: <20171204160008.649541106@linuxfoundation.org> In-Reply-To: <20171204160007.448534903@linuxfoundation.org> References: <20171204160007.448534903@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jonathan Liu 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 Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20170807115545.27747-1-net147@gmail.com Signed-off-by: Greg Kroah-Hartman --- 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 = {