net/can/mscan: add error path to mscan_open()

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 5 deletions

diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 263d1a9f0880..bb06dfb58f25 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)