dm: video: bridge: don't fail to activate bridge if reset or sleep GPIO is missing

Both GPIOs are optional, so we shouldn't fail if any is missing.
Without this fix reset is not deasserted if sleep GPIO is missing.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Cc: Vagrant Cascadian <vagrant@debian.org>

drivers/video/bridge/video-bridge-uclass.c

@@ -106,13 +106,19 @@ static int video_bridge_pre_probe(struct udevice *dev)
 int video_bridge_set_active(struct udevice *dev, bool active)
 {
 	struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
-	int ret;
+	int ret = 0;
 
 	debug("%s: %d\n", __func__, active);
-	ret = dm_gpio_set_value(&uc_priv->sleep, !active);
-	if (ret)
-		return ret;
-	if (active) {
+	if (uc_priv->sleep.dev) {
+		ret = dm_gpio_set_value(&uc_priv->sleep, !active);
+		if (ret)
+			return ret;
+	}
+
+	if (!active)
+		return 0;
+
+	if (uc_priv->reset.dev) {
 		ret = dm_gpio_set_value(&uc_priv->reset, true);
 		if (ret)
 			return ret;