netdev - [PATCH 10/11] net/can/mscan: add error path to mscan

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Date:	Mon, 16 Nov 2009 23:57:53 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	netdev@...r.kernel.org
Cc:	linuxppc-dev@...abs.org, socketcan-core@...ts.berlios.de,
	David Miller <davem@...emloft.net>,
	Grant Likely <grant.likely@...retlab.ca>, wg@...ndegger.com,
	Wolfram Sang <w.sang@...gutronix.de>
Subject: [PATCH 10/11] net/can/mscan: add error path to mscan_open()

Signed-off-by: Wolfram Sang <w.sang@...gutronix.de>
---
 drivers/net/can/mscan/mscan.c |   16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 263d1a9..bb06dfb 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -542,10 +542,8 @@ static int mscan_open(struct net_device *dev)
 
 	ret = request_irq(dev->irq, mscan_isr, 0, dev->name, dev);
 	if (ret < 0) {
-		napi_disable(&priv->napi);
-		printk(KERN_ERR "%s - failed to attach interrupt\n",
-		       dev->name);
-		return ret;
+		dev_err(dev->dev.parent, "failed to attach interrupt\n");
+		goto exit_napi_disable;
 	}
 
 	priv->open_time = jiffies;
@@ -554,11 +552,19 @@ static int mscan_open(struct net_device *dev)
 
 	ret = mscan_start(dev);
 	if (ret)
-		return ret;
+		goto exit_free_irq;
 
 	netif_start_queue(dev);
 
 	return 0;
+
+exit_free_irq:
+	priv->open_time = 0;
+	free_irq(dev->irq, dev);
+exit_napi_disable:
+	napi_disable(&priv->napi);
+	close_candev(dev);
+	return ret;
 }
 
 static int mscan_close(struct net_device *dev)
-- 
1.6.3.3

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