netdev - [PATCH] moxa: drop free_irq of devm_request

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Message-ID: <CAPgLHd8YRP7kL_jNHi3J9jFn86f=Fv-AWWUY_aRGZQOgVTNPgg@mail.gmail.com>
Date:	Wed, 25 Sep 2013 15:33:29 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	grant.likely@...aro.org, rob.herring@...xeda.com,
	davem@...emloft.net, jg1.han@...sung.com, jonas.jensen@...il.com
Cc:	yongjun_wei@...ndmicro.com.cn, netdev@...r.kernel.org
Subject: [PATCH] moxa: drop free_irq of devm_request_irq allocated irq

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

irq allocated with devm_request_irq should not be freed using
free_irq, because doing so causes a dangling pointer, and a
subsequent double free.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/net/ethernet/moxa/moxart_ether.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index 83c2091..9a7fcb5 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -531,7 +531,6 @@ static int moxart_remove(struct platform_device *pdev)
 	struct net_device *ndev = platform_get_drvdata(pdev);
 
 	unregister_netdev(ndev);
-	free_irq(ndev->irq, ndev);
 	moxart_mac_free_memory(ndev);
 	free_netdev(ndev);
 

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