linux-kernel - [PATCH 4.9 138/148] atm: horizon: Fix irq release error

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Message-Id: <20171212124438.259937620@linuxfoundation.org>
Date:   Tue, 12 Dec 2017 13:45:48 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Arvind Yadav <arvind.yadav.cs@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 138/148] atm: horizon: Fix irq release error

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

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

From: Arvind Yadav <arvind.yadav.cs@...il.com>


[ Upstream commit bde533f2ea607cbbbe76ef8738b36243939a7bc2 ]

atm_dev_register() can fail here and passed parameters to free irq
which is not initialised. Initialization of 'dev->irq' happened after
the 'goto out_free_irq'. So using 'irq' insted of 'dev->irq' in
free_irq().

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/atm/horizon.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/atm/horizon.c
+++ b/drivers/atm/horizon.c
@@ -2802,7 +2802,7 @@ out:
 	return err;
 
 out_free_irq:
-	free_irq(dev->irq, dev);
+	free_irq(irq, dev);
 out_free:
 	kfree(dev);
 out_release: