[PATCH v2 4/5] pinctrl: at91: Use dev_err_probe() instead of custom messaging

[Andy Shevchenko]

The custom message has no value except printing the error code,
the same does dev_err_probe(). Let's use the latter for the sake
of unification.

Note that some APIs already have messaging in them and some simply
do not require the current noise.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/pinctrl/pinctrl-at91.c | 64 +++++++++++-----------------------
 1 file changed, 21 insertions(+), 43 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 055a88b2dacc..08f88403affb 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1294,10 +1294,11 @@ static const struct of_device_id at91_pinctrl_of_match[] = {
 static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 				 struct at91_pinctrl *info)
 {
+	struct device *dev = &pdev->dev;
 	int ret = 0;
 	int i, j, ngpio_chips_enabled = 0;
 	uint32_t *tmp;
-	struct device_node *np = pdev->dev.of_node;
+	struct device_node *np = dev->of_node;
 	struct device_node *child;
 
 	if (!np)
@@ -1360,9 +1361,8 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev,
 			continue;
 		ret = at91_pinctrl_parse_functions(child, info, i++);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to parse function\n");
 			of_node_put(child);
-			return ret;
+			return dev_err_probe(dev, ret, "failed to parse function\n");
 		}
 	}
 
@@ -1415,11 +1415,8 @@ static int at91_pinctrl_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, info);
 	info->pctl = devm_pinctrl_register(&pdev->dev, &at91_pinctrl_desc,
 					   info);
-
-	if (IS_ERR(info->pctl)) {
-		dev_err(&pdev->dev, "could not register AT91 pinctrl driver\n");
-		return PTR_ERR(info->pctl);
-	}
+	if (IS_ERR(info->pctl))
+		return dev_err_probe(dev, PTR_ERR(info->pctl), "could not register AT91 pinctrl driver\n");
 
 	/* We will handle a range of GPIO pins */
 	for (i = 0; i < gpio_banks; i++)
@@ -1820,39 +1817,28 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	char **names;
 
 	BUG_ON(alias_idx >= ARRAY_SIZE(gpio_chips));
-	if (gpio_chips[alias_idx]) {
-		ret = -EBUSY;
-		goto err;
-	}
+	if (gpio_chips[alias_idx])
+		return dev_err_probe(dev, -EBUSY, "%d slot is occupied.\n", alias_idx);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = irq;
-		goto err;
-	}
+	if (irq < 0)
+		return irq;
 
 	at91_chip = devm_kzalloc(&pdev->dev, sizeof(*at91_chip), GFP_KERNEL);
-	if (!at91_chip) {
-		ret = -ENOMEM;
-		goto err;
-	}
+	if (!at91_chip)
+		return -ENOMEM;
 
 	at91_chip->regbase = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(at91_chip->regbase)) {
-		ret = PTR_ERR(at91_chip->regbase);
-		goto err;
-	}
+	if (IS_ERR(at91_chip->regbase))
+		return PTR_ERR(at91_chip->regbase);
 
 	at91_chip->ops = of_device_get_match_data(dev);
 	at91_chip->pioc_virq = irq;
 	at91_chip->pioc_idx = alias_idx;
 
 	at91_chip->clock = devm_clk_get_enabled(&pdev->dev, NULL);
-	if (IS_ERR(at91_chip->clock)) {
-		dev_err(&pdev->dev, "failed to get clock, ignoring.\n");
-		ret = PTR_ERR(at91_chip->clock);
-		goto err;
-	}
+	if (IS_ERR(at91_chip->clock))
+		return dev_err_probe(dev, PTR_ERR(at91_chip->clock), "failed to get clock, ignoring.\n");
 
 	at91_chip->chip = at91_gpio_template;
 	at91_chip->id = alias_idx;
@@ -1865,17 +1851,15 @@ static int at91_gpio_probe(struct platform_device *pdev)
 
 	if (!of_property_read_u32(np, "#gpio-lines", &ngpio)) {
 		if (ngpio >= MAX_NB_GPIO_PER_BANK)
-			pr_err("at91_gpio.%d, gpio-nb >= %d failback to %d\n",
-			       alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
+			dev_err(dev, "at91_gpio.%d, gpio-nb >= %d failback to %d\n",
+				alias_idx, MAX_NB_GPIO_PER_BANK, MAX_NB_GPIO_PER_BANK);
 		else
 			chip->ngpio = ngpio;
 	}
 
 	names = devm_kasprintf_strarray(dev, "pio", chip->ngpio);
-	if (!names) {
-		ret = -ENOMEM;
-		goto err;
-	}
+	if (!names)
+		return -ENOMEM;
 
 	for (i = 0; i < chip->ngpio; i++)
 		strreplace(names[i], '-', alias_idx + 'A');
@@ -1892,11 +1876,11 @@ static int at91_gpio_probe(struct platform_device *pdev)
 
 	ret = at91_gpio_of_irq_setup(pdev, at91_chip);
 	if (ret)
-		goto gpiochip_add_err;
+		return ret;
 
 	ret = gpiochip_add_data(chip, at91_chip);
 	if (ret)
-		goto gpiochip_add_err;
+		return ret;
 
 	gpio_chips[alias_idx] = at91_chip;
 	platform_set_drvdata(pdev, at91_chip);
@@ -1905,12 +1889,6 @@ static int at91_gpio_probe(struct platform_device *pdev)
 	dev_info(&pdev->dev, "at address %p\n", at91_chip->regbase);
 
 	return 0;
-
-gpiochip_add_err:
-err:
-	dev_err(&pdev->dev, "Failure %i for GPIO %i\n", ret, alias_idx);
-
-	return ret;
 }
 
 static const struct dev_pm_ops at91_gpio_pm_ops = {
-- 
2.39.1