linux-kernel - [PATCH] pinctrl: max77620: Use common error handling code in max77620_pinconf

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Date:   Mon, 30 Oct 2017 15:00:07 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-gpio@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] pinctrl: max77620: Use common error handling code in
 max77620_pinconf_set()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 30 Oct 2017 14:55:52 +0100

* Add a jump target so that a specific error message is stored only once
  at the end of this function implementation.

* Replace two calls of the function "dev_err" by goto statements.

* Adjust two condition checks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/pinctrl/pinctrl-max77620.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-max77620.c b/drivers/pinctrl/pinctrl-max77620.c
index b8d2180a2bea..a7f37063518e 100644
--- a/drivers/pinctrl/pinctrl-max77620.c
+++ b/drivers/pinctrl/pinctrl-max77620.c
@@ -420,11 +420,9 @@ static int max77620_pinconf_set(struct pinctrl_dev *pctldev,
 						 MAX77620_REG_GPIO0 + pin,
 						 MAX77620_CNFG_GPIO_DRV_MASK,
 						 val);
-			if (ret < 0) {
-				dev_err(dev, "Reg 0x%02x update failed %d\n",
-					MAX77620_REG_GPIO0 + pin, ret);
-				return ret;
-			}
+			if (ret)
+				goto report_update_failure;
+
 			mpci->pin_info[pin].drv_type = val ?
 				MAX77620_PIN_PP_DRV : MAX77620_PIN_OD_DRV;
 			break;
@@ -435,11 +433,9 @@ static int max77620_pinconf_set(struct pinctrl_dev *pctldev,
 						 MAX77620_REG_GPIO0 + pin,
 						 MAX77620_CNFG_GPIO_DRV_MASK,
 						 val);
-			if (ret < 0) {
-				dev_err(dev, "Reg 0x%02x update failed %d\n",
-					MAX77620_REG_GPIO0 + pin, ret);
-				return ret;
-			}
+			if (ret)
+				goto report_update_failure;
+
 			mpci->pin_info[pin].drv_type = val ?
 				MAX77620_PIN_PP_DRV : MAX77620_PIN_OD_DRV;
 			break;
@@ -536,6 +532,11 @@ static int max77620_pinconf_set(struct pinctrl_dev *pctldev,
 	}
 
 	return 0;
+
+report_update_failure:
+	dev_err(dev, "Reg 0x%02x update failed %d\n",
+		MAX77620_REG_GPIO0 + pin, ret);
+	return ret;
 }
 
 static const struct pinconf_ops max77620_pinconf_ops = {
-- 
2.14.3