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: d02fd93e2c ("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>
25abe3a958