The drm_panel_of_backlight() function must be called after drm_panel_init(), according to the function's documentation; otherwise the backlight won't be properly initialized.
v2: New patch
Signed-off-by: Paul Cercueil paul@crapouillou.net --- drivers/gpu/drm/panel/panel-novatek-nt39016.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt39016.c b/drivers/gpu/drm/panel/panel-novatek-nt39016.c index 39f7be679da5..daa583030246 100644 --- a/drivers/gpu/drm/panel/panel-novatek-nt39016.c +++ b/drivers/gpu/drm/panel/panel-novatek-nt39016.c @@ -285,6 +285,9 @@ static int nt39016_probe(struct spi_device *spi) return PTR_ERR(panel->map); }
+ drm_panel_init(&panel->drm_panel, dev, &nt39016_funcs, + DRM_MODE_CONNECTOR_DPI); + err = drm_panel_of_backlight(&panel->drm_panel); if (err) { if (err != -EPROBE_DEFER) @@ -292,9 +295,6 @@ static int nt39016_probe(struct spi_device *spi) return err; }
- drm_panel_init(&panel->drm_panel, dev, &nt39016_funcs, - DRM_MODE_CONNECTOR_DPI); - drm_panel_add(&panel->drm_panel);
return 0;