linux-kernel - [PATCH v2 4/4] pinctrl: samsung: Use devres version of gpiochip_add

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Message-ID: <1487251636-2480-4-git-send-email-ckeepax@opensource.wolfsonmicro.com>
Date:   Thu, 16 Feb 2017 13:27:16 +0000
From:   Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:     <linus.walleij@...aro.org>, <krzk@...nel.org>
CC:     <tomasz.figa@...il.com>, <s.nawrocki@...sung.com>,
        <linux-gpio@...r.kernel.org>, <linux-samsung-soc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <patches@...nsource.wolfsonmicro.com>
Subject: [PATCH v2 4/4] pinctrl: samsung: Use devres version of gpiochip_add_data

Use devm_gpiochip_add_data to simplify the error path in
samsung_gpiolib_register. Additionally this would also fix a leak if
the pinctrl driver was unbound, although admittedly I can't see any
good use-case for doing so, but the driver does currently allow it.

Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---

Changes since v1:
 - Update commit message.

 drivers/pinctrl/samsung/pinctrl-samsung.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index 4ab20ec..eb08f30 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -934,20 +934,15 @@ static int samsung_gpiolib_register(struct platform_device *pdev,
 		gc->of_node = bank->of_node;
 		gc->label = bank->name;
 
-		ret = gpiochip_add_data(gc, bank);
+		ret = devm_gpiochip_add_data(&pdev->dev, gc, bank);
 		if (ret) {
 			dev_err(&pdev->dev, "failed to register gpio_chip %s, error code: %d\n",
 							gc->label, ret);
-			goto fail;
+			return ret;
 		}
 	}
 
 	return 0;
-
-fail:
-	for (--i, --bank; i >= 0; --i, --bank)
-		gpiochip_remove(&bank->gpio_chip);
-	return ret;
 }
 
 /* retrieve the soc specific data */
-- 
2.1.4