linux-kernel - [PATCH 4.19 132/206] pinctrl: freescale: imx: Fix an error handling path in imx_pinctrl

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Date:   Tue, 23 Jun 2020 21:57:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Dong Aisheng <aisheng.dong@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 132/206] pinctrl: freescale: imx: Fix an error handling path in imx_pinctrl_probe()

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit 11d8da5cabf7c6c3263ba2cd9c00260395867048 ]

'pinctrl_unregister()' should not be called to undo
'devm_pinctrl_register_and_init()', it is already handled by the framework.

This simplifies the error handling paths of the probe function.
The 'imx_free_resources()' can be removed as well.

Fixes: a51c158bf0f7 ("pinctrl: imx: use radix trees for groups and functions")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Reviewed-by: Dong Aisheng <aisheng.dong@....com>
Link: https://lore.kernel.org/r/20200530204955.588962-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/freescale/pinctrl-imx.c | 19 ++-----------------
 1 file changed, 2 insertions(+), 17 deletions(-)

diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index b04edc22dad76..90d414dd792cb 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -662,16 +662,6 @@ static int imx_pinctrl_probe_dt(struct platform_device *pdev,
 	return 0;
 }
 
-/*
- * imx_free_resources() - free memory used by this driver
- * @info: info driver instance
- */
-static void imx_free_resources(struct imx_pinctrl *ipctl)
-{
-	if (ipctl->pctl)
-		pinctrl_unregister(ipctl->pctl);
-}
-
 int imx_pinctrl_probe(struct platform_device *pdev,
 		      const struct imx_pinctrl_soc_info *info)
 {
@@ -762,21 +752,16 @@ int imx_pinctrl_probe(struct platform_device *pdev,
 					     &ipctl->pctl);
 	if (ret) {
 		dev_err(&pdev->dev, "could not register IMX pinctrl driver\n");
-		goto free;
+		return ret;
 	}
 
 	ret = imx_pinctrl_probe_dt(pdev, ipctl);
 	if (ret) {
 		dev_err(&pdev->dev, "fail to probe dt properties\n");
-		goto free;
+		return ret;
 	}
 
 	dev_info(&pdev->dev, "initialized IMX pinctrl driver\n");
 
 	return pinctrl_enable(ipctl->pctl);
-
-free:
-	imx_free_resources(ipctl);
-
-	return ret;
 }
-- 
2.25.1