pwm_backlight: Validate dft_brightness in main probe function

Move the dft_brightness validity check from the DT parsing function to the
main probe. In this way we can validate it in case we are booting with or
without DT.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 4af6d1302f17..a71ef4a79ec4 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -134,12 +134,6 @@ static int pwm_backlight_parse_dt(struct device *dev,
                 if (ret < 0)
                         return ret;
 
-                if (value >= data->max_brightness) {
-                        dev_warn(dev, "invalid default brightness level: %u, using %u\n",
-                                 value, data->max_brightness - 1);
-                        value = data->max_brightness - 1;
-                }
-
                 data->dft_brightness = value;
                 data->max_brightness--;
         }
@@ -248,6 +242,13 @@ static int pwm_backlight_probe(struct platform_device *pdev)
                 goto err_alloc;
         }
 
+        if (data->dft_brightness > data->max_brightness) {
+                dev_warn(&pdev->dev,
+                         "invalid default brightness level: %u, using %u\n",
+                         data->dft_brightness, data->max_brightness);
+                data->dft_brightness = data->max_brightness;
+        }
+
         bl->props.brightness = data->dft_brightness;
         backlight_update_status(bl);