pwm: pxa: Improve using dev_err_probe()

Add a message to the error path of devm_clk_get() and simplify the error
path of devm_pwmchip_add() while improving the error message en passant.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>

Author: ukleinek

drivers/pwm/pwm-pxa.c

@@ -160,24 +160,24 @@ static int pwm_probe(struct platform_device *pdev)
 	const struct platform_device_id *id = platform_get_device_id(pdev);
 	struct pwm_chip *chip;
 	struct pxa_pwm_chip *pc;
+	struct device *dev = &pdev->dev;
 	int ret = 0;
 
 	if (IS_ENABLED(CONFIG_OF) && id == NULL)
-		id = of_device_get_match_data(&pdev->dev);
+		id = of_device_get_match_data(dev);
 
 	if (id == NULL)
 		return -EINVAL;
 
-	chip = devm_pwmchip_alloc(&pdev->dev,
-				  (id->driver_data & HAS_SECONDARY_PWM) ? 2 : 1,
+	chip = devm_pwmchip_alloc(dev, (id->driver_data & HAS_SECONDARY_PWM) ? 2 : 1,
 				  sizeof(*pc));
 	if (IS_ERR(chip))
 		return PTR_ERR(chip);
 	pc = to_pxa_pwm_chip(chip);
 
-	pc->clk = devm_clk_get(&pdev->dev, NULL);
+	pc->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(pc->clk))
-		return PTR_ERR(pc->clk);
+		return dev_err_probe(dev, PTR_ERR(pc->clk), "Failed to get clock\n");
 
 	chip->ops = &pxa_pwm_ops;
 
@@ -188,11 +188,9 @@ static int pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(pc->mmio_base))
 		return PTR_ERR(pc->mmio_base);
 
-	ret = devm_pwmchip_add(&pdev->dev, chip);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
-		return ret;
-	}
+	ret = devm_pwmchip_add(dev, chip);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "pwmchip_add() failed\n");
 
 	return 0;
 }