drm/panel: JDI LT070ME05000 simplify with dev_err_probe()

Use the dev_err_probe() helper to simplify error handling during probe.
This also handle scenario, when EDEFER is returned and useless error is printed.

Fixes error:
panel-jdi-lt070me05000 4700000.dsi.0: cannot get enable-gpio -517

Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230812185239.378582-1-david@ixit.cz

diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 8f4f137..2130084 100644 (file)
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -404,38 +404,30 @@ static int jdi_panel_add(struct jdi_panel *jdi)
 
        ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(jdi->supplies),
                                      jdi->supplies);
-       if (ret < 0) {
-               dev_err(dev, "failed to init regulator, ret=%d\n", ret);
-               return ret;
-       }
+       if (ret < 0)
+               return dev_err_probe(dev, ret,
+                                    "failed to init regulator, ret=%d\n", ret);
 
        jdi->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
        if (IS_ERR(jdi->enable_gpio)) {
-               ret = PTR_ERR(jdi->enable_gpio);
-               dev_err(dev, "cannot get enable-gpio %d\n", ret);
-               return ret;
+               return dev_err_probe(dev, PTR_ERR(jdi->enable_gpio),
+                                    "cannot get enable-gpio %d\n", ret);
        }
 
        jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-       if (IS_ERR(jdi->reset_gpio)) {
-               ret = PTR_ERR(jdi->reset_gpio);
-               dev_err(dev, "cannot get reset-gpios %d\n", ret);
-               return ret;
-       }
+       if (IS_ERR(jdi->reset_gpio))
+               return dev_err_probe(dev, PTR_ERR(jdi->reset_gpio),
+                                    "cannot get reset-gpios %d\n", ret);
 
        jdi->dcdc_en_gpio = devm_gpiod_get(dev, "dcdc-en", GPIOD_OUT_LOW);
-       if (IS_ERR(jdi->dcdc_en_gpio)) {
-               ret = PTR_ERR(jdi->dcdc_en_gpio);
-               dev_err(dev, "cannot get dcdc-en-gpio %d\n", ret);
-               return ret;
-       }
+       if (IS_ERR(jdi->dcdc_en_gpio))
+               return dev_err_probe(dev, PTR_ERR(jdi->dcdc_en_gpio),
+                                    "cannot get dcdc-en-gpio %d\n", ret);
 
        jdi->backlight = drm_panel_create_dsi_backlight(jdi->dsi);
-       if (IS_ERR(jdi->backlight)) {
-               ret = PTR_ERR(jdi->backlight);
-               dev_err(dev, "failed to register backlight %d\n", ret);
-               return ret;
-       }
+       if (IS_ERR(jdi->backlight))
+               return dev_err_probe(dev, PTR_ERR(jdi->backlight),
+                                    "failed to register backlight %d\n", ret);
 
        drm_panel_init(&jdi->base, &jdi->dsi->dev, &jdi_panel_funcs,
                       DRM_MODE_CONNECTOR_DSI);