linux-kernel - [PATCH v2] net: mvpp2: debugfs: remove redundant parameter check in three functions

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Message-Id: <20230717025538.2848-1-duminjie@vivo.com>
Date:   Mon, 17 Jul 2023 10:55:37 +0800
From:   Minjie Du <duminjie@...o.com>
To:     simon.horman@...igine.com, Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        netdev@...r.kernel.org (open list:MARVELL MVPP2 ETHERNET DRIVER),
        linux-kernel@...r.kernel.org (open list)
Cc:     opensource.kernel@...o.com, Minjie Du <duminjie@...o.com>
Subject: [PATCH v2] net: mvpp2: debugfs: remove redundant parameter check in three functions

As per the comment above debugfs_create_dir(), it is not expected to
return an error, so an extra error check is not needed.
Drop the return check of debugfs_create_dir() in
mvpp2_dbgfs_c2_entry_init(), mvpp2_dbgfs_flow_tbl_entry_init()
and mvpp2_dbgfs_cls_init().

Fixes: b607cc61be41 ("net: mvpp2: debugfs: Allow reading the C2 engine table from debugfs")
Signed-off-by: Minjie Du <duminjie@...o.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c
index 75e83ea2a..0f9bc4f8e 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c
@@ -593,8 +593,6 @@ static int mvpp2_dbgfs_c2_entry_init(struct dentry *parent,
 	sprintf(c2_entry_name, "%03d", id);
 
 	c2_entry_dir = debugfs_create_dir(c2_entry_name, parent);
-	if (!c2_entry_dir)
-		return -ENOMEM;
 
 	entry = &priv->dbgfs_entries->c2_entries[id];
 
@@ -626,8 +624,6 @@ static int mvpp2_dbgfs_flow_tbl_entry_init(struct dentry *parent,
 	sprintf(flow_tbl_entry_name, "%03d", id);
 
 	flow_tbl_entry_dir = debugfs_create_dir(flow_tbl_entry_name, parent);
-	if (!flow_tbl_entry_dir)
-		return -ENOMEM;
 
 	entry = &priv->dbgfs_entries->flt_entries[id];
 
@@ -646,12 +642,8 @@ static int mvpp2_dbgfs_cls_init(struct dentry *parent, struct mvpp2 *priv)
 	int i, ret;
 
 	cls_dir = debugfs_create_dir("classifier", parent);
-	if (!cls_dir)
-		return -ENOMEM;
 
 	c2_dir = debugfs_create_dir("c2", cls_dir);
-	if (!c2_dir)
-		return -ENOMEM;
 
 	for (i = 0; i < MVPP22_CLS_C2_N_ENTRIES; i++) {
 		ret = mvpp2_dbgfs_c2_entry_init(c2_dir, priv, i);
@@ -660,8 +652,6 @@ static int mvpp2_dbgfs_cls_init(struct dentry *parent, struct mvpp2 *priv)
 	}
 
 	flow_tbl_dir = debugfs_create_dir("flow_table", cls_dir);
-	if (!flow_tbl_dir)
-		return -ENOMEM;
 
 	for (i = 0; i < MVPP2_CLS_FLOWS_TBL_SIZE; i++) {
 		ret = mvpp2_dbgfs_flow_tbl_entry_init(flow_tbl_dir, priv, i);
-- 
2.39.0