linux-kernel - [PATCH 1/5] pinctrl: samsung: Make samsung_pinctrl_get_soc_data use ERR

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Date:	Tue, 23 Sep 2014 21:05:37 +0200
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	linux-samsung-soc@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>
Subject: [PATCH 1/5] pinctrl: samsung: Make samsung_pinctrl_get_soc_data use ERR_PTR()

Currently the function returns a valid pointer on success and NULL on
error, so exact error code is lost. This patch changes return convention
of the function to use ERR_PTR() on error instead.

Signed-off-by: Tomasz Figa <tomasz.figa@...il.com>
---
 drivers/pinctrl/samsung/pinctrl-samsung.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
index 4a47691c32b1..0504f0b75de8 100644
--- a/drivers/pinctrl/samsung/pinctrl-samsung.c
+++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -988,7 +988,7 @@ static struct samsung_pin_ctrl *samsung_pinctrl_get_soc_data(
 	id = of_alias_get_id(node, "pinctrl");
 	if (id < 0) {
 		dev_err(&pdev->dev, "failed to get alias id\n");
-		return NULL;
+		return ERR_PTR(-ENOENT);
 	}
 	match = of_match_node(samsung_pinctrl_dt_match, node);
 	ctrl = (struct samsung_pin_ctrl *)match->data + id;
@@ -1040,9 +1040,9 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
 	}
 
 	ctrl = samsung_pinctrl_get_soc_data(drvdata, pdev);
-	if (!ctrl) {
+	if (IS_ERR(ctrl)) {
 		dev_err(&pdev->dev, "driver data not available\n");
-		return -EINVAL;
+		return PTR_ERR(ctrl);
 	}
 	drvdata->ctrl = ctrl;
 	drvdata->dev = dev;
-- 
2.1.0

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