lkml.org 
[lkml]   [2022]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH -next v2] xtensa: iss: fix handling error cases in iss_net_configure()
Date
The 'pdev' and 'netdev' need be release in error cases of iss_net_configure().
In orde to fix this, add two labels for error case to release them.

And 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>
---
v2:
change return type of iss_net_configure() to void
---
arch/xtensa/platforms/iss/network.c | 33 ++++++++++++++---------------
1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index fd84d4891758..aeb5828a639c 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -472,16 +472,15 @@ static const struct net_device_ops iss_netdev_ops = {
.ndo_set_rx_mode = iss_net_set_multicast_list,
};

-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. */
@@ -509,7 +508,7 @@ 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);
@@ -517,7 +516,8 @@ 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;
}

@@ -527,7 +527,8 @@ static int iss_net_configure(int index, char *init)

lp->pdev.id = index;
lp->pdev.name = DRIVER_NAME;
- 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;
@@ -536,23 +537,21 @@ 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;
+ goto err_unregister_device;
}
+ rtnl_unlock();

timer_setup(&lp->tl, iss_net_user_timer_expire, 0);

- return 0;
+ return;

-errout:
- /* FIXME: unregister; free, etc.. */
- return -EIO;
+err_unregister_device:
+ platform_device_unregister(&lp->pdev);
+err_free_netdev:
+ free_netdev(dev);
}

/* ------------------------------------------------------------------------- */
--
2.25.1
\
 
 \ /
  Last update: 2022-07-07 04:23    [W:0.030 / U:0.812 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site