xtensa: iss: fix handling error cases in iss_net_configure()

The 'pdev' and 'netdev' need to be released in error cases of
iss_net_configure().

Change the return type of iss_net_configure() to void, because it's
not used.

Fixes: 7282bee78798 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 2a22e80a488dedf7608e8157fd289d4fdfb94f79..9ac46ab3a296cb599ab193b60ba0dae62c4c1cd7 100644 (file)
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -475,16 +475,15 @@ static void iss_net_pdev_release(struct device *dev)
        free_netdev(lp->dev);
 }
 
-static int iss_net_configure(int index, char *init)
+static void iss_net_configure(int index, char *init)
 {
        struct net_device *dev;
        struct iss_net_private *lp;
-       int err;
 
        dev = alloc_etherdev(sizeof(*lp));
        if (dev == NULL) {
                pr_err("eth_configure: failed to allocate device\n");
-               return 1;
+               return;
        }
 
        /* Initialize private element. */
@@ -511,7 +510,7 @@ static int iss_net_configure(int index, char *init)
        if (!tuntap_probe(lp, index, init)) {
                pr_err("%s: invalid arguments. Skipping device!\n",
                       dev->name);
-               goto errout;
+               goto err_free_netdev;
        }
 
        pr_info("Netdevice %d (%pM)\n", index, dev->dev_addr);
@@ -519,14 +518,16 @@ static int iss_net_configure(int index, char *init)
        /* sysfs register */
 
        if (!driver_registered) {
-               platform_driver_register(&iss_net_driver);
+               if (platform_driver_register(&iss_net_driver))
+                       goto err_free_netdev;
                driver_registered = 1;
        }
 
        lp->pdev.id = index;
        lp->pdev.name = DRIVER_NAME;
        lp->pdev.dev.release = iss_net_pdev_release;
-       platform_device_register(&lp->pdev);
+       if (platform_device_register(&lp->pdev))
+               goto err_free_netdev;
        SET_NETDEV_DEV(dev, &lp->pdev.dev);
 
        dev->netdev_ops = &iss_netdev_ops;
@@ -535,23 +536,20 @@ static int iss_net_configure(int index, char *init)
        dev->irq = -1;
 
        rtnl_lock();
-       err = register_netdevice(dev);
-       rtnl_unlock();
-
-       if (err) {
+       if (register_netdevice(dev)) {
+               rtnl_unlock();
                pr_err("%s: error registering net device!\n", dev->name);
-               /* XXX: should we call ->remove() here? */
-               free_netdev(dev);
-               return 1;
+               platform_device_unregister(&lp->pdev);
+               return;
        }
+       rtnl_unlock();
 
        timer_setup(&lp->tl, iss_net_user_timer_expire, 0);
 
-       return 0;
+       return;
 
-errout:
-       /* FIXME: unregister; free, etc.. */
-       return -EIO;
+err_free_netdev:
+       free_netdev(dev);
 }
 
 /* ------------------------------------------------------------------------- */