linux-kernel - [patch] isp1704_charger: use after free on probe error

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Message-ID: <20120327202212.GB9197@elgon.mountain>
Date:	Tue, 27 Mar 2012 23:22:13 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Felipe Contreras <felipe.contreras@...il.com>
Cc:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Felipe Balbi <balbi@...com>,
	Marek Vasut <marek.vasut@...il.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] isp1704_charger: use after free on probe error

We can't use "isp" after freeing it.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/power/isp1704_charger.c b/drivers/power/isp1704_charger.c
index 39eb50f..e5ccd29 100644
--- a/drivers/power/isp1704_charger.c
+++ b/drivers/power/isp1704_charger.c
@@ -474,13 +474,13 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
 fail2:
 	power_supply_unregister(&isp->psy);
 fail1:
+	isp1704_charger_set_power(isp, 0);
 	usb_put_transceiver(isp->phy);
 fail0:
 	kfree(isp);
 
 	dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
 
-	isp1704_charger_set_power(isp, 0);
 	return ret;
 }
 
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