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l2tp: no need to check return value of debugfs_create functions 

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Also, there is no need to store the individual debugfs file name, just
remove the whole directory all at once, saving a local variable.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guillaume Nault <g.nault@alphalink.fr>
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Greg Kroah-Hartman 2019-06-14 09:04:38 +02:00 committed by David S. Miller
parent 0b55b63035
commit 3adcfa4478
1 changed files with 3 additions and 18 deletions
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21
net/l2tp/l2tp_debugfs.c
View File

@ -31,7 +31,6 @@
#include "l2tp_core.h"
static struct dentry *rootdir;
static struct dentry *tunnels;
struct l2tp_dfs_seq_data {
struct net *net;
@ -326,32 +325,18 @@ static const struct file_operations l2tp_dfs_fops = {
static int __init l2tp_debugfs_init(void)
{
int rc = 0;
rootdir = debugfs_create_dir("l2tp", NULL);
if (IS_ERR(rootdir)) {
rc = PTR_ERR(rootdir);
rootdir = NULL;
goto out;
}
tunnels = debugfs_create_file("tunnels", 0600, rootdir, NULL, &l2tp_dfs_fops);
if (tunnels == NULL)
rc = -EIO;
debugfs_create_file("tunnels", 0600, rootdir, NULL, &l2tp_dfs_fops);
pr_info("L2TP debugfs support\n");
out:
if (rc)
pr_warn("unable to init\n");
return rc;
return 0;
}
static void __exit l2tp_debugfs_exit(void)
{
debugfs_remove(tunnels);
debugfs_remove(rootdir);
debugfs_remove_recursive(rootdir);
}
module_init(l2tp_debugfs_init);