linux-kernel - [PATCH 3.12 044/212] gpio: rcar: NULL dereference on error in probe()

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Message-Id: <20131202191253.248957041@linuxfoundation.org>
Date:	Mon,  2 Dec 2013 11:13:55 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Magnus Damm <damm@...nsource.se>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 3.12 044/212] gpio: rcar: NULL dereference on error in probe()

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 0c8aab8e65e450f2bfea494c1b6a86ded653f88c upstream.

It's not obvious from the label name but "err1" tries to release
"p->irq_domain" which leads to a NULL dereference.

Fixes: 119f5e448d32 ('gpio: Renesas R-Car GPIO driver V3')

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Acked-by: Magnus Damm <damm@...nsource.se>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpio/gpio-rcar.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -380,7 +380,7 @@ static int gpio_rcar_probe(struct platfo
 	if (!p->irq_domain) {
 		ret = -ENXIO;
 		dev_err(&pdev->dev, "cannot initialize irq domain\n");
-		goto err1;
+		goto err0;
 	}
 
 	if (devm_request_irq(&pdev->dev, irq->start,


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