hi846: improve error output with errno values

drivers/media/i2c/hi846.c

@@ -1206,20 +1206,23 @@ static int __maybe_unused hi846_resume(struct device *dev)
 
 	ret = hi846_regulator_enable(hi846);
 	if (ret) {
-		dev_err(dev, "enable regulator failed\n");
+		dev_err(dev, "enable regulator failed: %d\n", ret);
 		return ret;
 	}
 
 	ret = clk_prepare_enable(hi846->clock);
-	if (ret < 0)
+	if (ret < 0) {
+		dev_err(dev, "enable clk failed: %d\n", ret);
 		goto error_regulator;
+	}
 
 	msleep(100);
 
 	if (hi846->streaming) {
 		ret = hi846_start_streaming(hi846);
 		if (ret) {
-			dev_err(dev, "%s: start streaming failed\n", __func__);
+			dev_err(dev, "%s: start streaming failed: %d\n",
+				__func__, ret);
 			goto error;
 		}
 	}
@@ -1228,7 +1231,6 @@ static int __maybe_unused hi846_resume(struct device *dev)
 
 error:
 	hi846_stop_streaming(hi846);
-	dev_err(dev, "%s: stopped streaming\n", __func__);
 	hi846->streaming = 0;
 
 error_regulator:
@@ -1460,7 +1462,8 @@ static int hi846_parse_gpios(struct hi846_gpio *gpios, struct device *dev)
 	for (i = 0; i < NUM_GPIOS; ++i) {
 		ret = of_get_named_gpio_flags(node, names[i], 0, &flags);
 		if (ret < 0) {
-			dev_err(dev, "no %s GPIO pin provided\n", names[i]);
+			dev_err(dev, "no %s GPIO pin provided: %d\n", names[i],
+				ret);
 			return ret;
 		}
 		gpios[i].gpio = ret;
@@ -1623,7 +1626,7 @@ static int hi846_probe(struct i2c_client *client)
 
 	ret = hi846_parse_gpios(hi846->gpios, &client->dev);
 	if (ret < 0) {
-		dev_err(&client->dev, "parse gpios failed\n");
+		dev_err(&client->dev, "parse gpios failed: %d\n", ret);
 		return ret;
 	}