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dpaa2: 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.

Because we don't care about the individual files, we can remove the
stored dentry for the files, as they are not needed to be kept track of
at all.

Cc: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Greg Kroah-Hartman 2019-08-10 12:17:25 +02:00 committed by David S. Miller
parent 8d72ab119f
commit 92aff5b467
2 changed files with 7 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
View File

@ -164,70 +164,30 @@ static const struct file_operations dpaa2_dbg_ch_ops = {
void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
{
if (!dpaa2_dbg_root)
return;
struct dentry *dir;
/* Create a directory for the interface */
priv->dbg.dir = debugfs_create_dir(priv->net_dev->name,
dpaa2_dbg_root);
if (!priv->dbg.dir) {
netdev_err(priv->net_dev, "debugfs_create_dir() failed\n");
return;
}
dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root);
priv->dbg.dir = dir;
/* per-cpu stats file */
priv->dbg.cpu_stats = debugfs_create_file("cpu_stats", 0444,
priv->dbg.dir, priv,
&dpaa2_dbg_cpu_ops);
if (!priv->dbg.cpu_stats) {
netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
goto err_cpu_stats;
}
debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_ops);
/* per-fq stats file */
priv->dbg.fq_stats = debugfs_create_file("fq_stats", 0444,
priv->dbg.dir, priv,
&dpaa2_dbg_fq_ops);
if (!priv->dbg.fq_stats) {
netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
goto err_fq_stats;
}
debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fq_ops);
/* per-fq stats file */
priv->dbg.ch_stats = debugfs_create_file("ch_stats", 0444,
priv->dbg.dir, priv,
&dpaa2_dbg_ch_ops);
if (!priv->dbg.fq_stats) {
netdev_err(priv->net_dev, "debugfs_create_file() failed\n");
goto err_ch_stats;
}
return;
err_ch_stats:
debugfs_remove(priv->dbg.fq_stats);
err_fq_stats:
debugfs_remove(priv->dbg.cpu_stats);
err_cpu_stats:
debugfs_remove(priv->dbg.dir);
debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops);
}
void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
{
debugfs_remove(priv->dbg.fq_stats);
debugfs_remove(priv->dbg.ch_stats);
debugfs_remove(priv->dbg.cpu_stats);
debugfs_remove(priv->dbg.dir);
debugfs_remove_recursive(priv->dbg.dir);
}
void dpaa2_eth_dbg_init(void)
{
dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
if (!dpaa2_dbg_root) {
pr_err("DPAA2-ETH: debugfs create failed\n");
return;
}
pr_debug("DPAA2-ETH: debugfs created\n");
}

3
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.h
View File

@ -11,9 +11,6 @@ struct dpaa2_eth_priv;
struct dpaa2_debugfs {
struct dentry *dir;
struct dentry *fq_stats;
struct dentry *ch_stats;
struct dentry *cpu_stats;
};
#ifdef CONFIG_DEBUG_FS