提交 30e7e3ec 编写于 作者: A Al Viro

ethtool: don't open-code memdup_user()

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 a2c841d9
......@@ -2322,16 +2322,12 @@ static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
ret = ethtool_tunable_valid(&tuna);
if (ret)
return ret;
data = kmalloc(tuna.len, GFP_USER);
if (!data)
return -ENOMEM;
useraddr += sizeof(tuna);
ret = -EFAULT;
if (copy_from_user(data, useraddr, tuna.len))
goto out;
data = memdup_user(useraddr, tuna.len);
if (IS_ERR(data))
return PTR_ERR(data);
ret = ops->set_tunable(dev, &tuna, data);
out:
kfree(data);
return ret;
}
......@@ -2507,18 +2503,14 @@ static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
ret = ethtool_phy_tunable_valid(&tuna);
if (ret)
return ret;
data = kmalloc(tuna.len, GFP_USER);
if (!data)
return -ENOMEM;
useraddr += sizeof(tuna);
ret = -EFAULT;
if (copy_from_user(data, useraddr, tuna.len))
goto out;
data = memdup_user(useraddr, tuna.len);
if (IS_ERR(data))
return PTR_ERR(data);
mutex_lock(&phydev->lock);
ret = phydev->drv->set_tunable(phydev, &tuna, data);
mutex_unlock(&phydev->lock);
out:
kfree(data);
return ret;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册