From 7689427e238d69c03fe6a2a9ebc67f72d9c7a877 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Thu, 7 Jul 2022 10:32:29 +0800 Subject: [PATCH] xtensa: iss: fix handling error cases in iss_net_configure() [ Upstream commit 628ccfc8f5f79dd548319408fcc53949fe97b258 ] 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 Signed-off-by: Yang Yingliang Signed-off-by: Max Filippov Signed-off-by: Sasha Levin --- arch/xtensa/platforms/iss/network.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c index 4801df4..08d70c8 100644 --- a/arch/xtensa/platforms/iss/network.c +++ b/arch/xtensa/platforms/iss/network.c @@ -511,16 +511,15 @@ 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. */ @@ -549,7 +548,7 @@ 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); @@ -557,7 +556,8 @@ 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; } @@ -568,7 +568,8 @@ static int iss_net_configure(int index, char *init) 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; @@ -577,23 +578,20 @@ 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); } /* ------------------------------------------------------------------------- */ -- 2.7.4