From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Sat, 10 Aug 2019 12:17:28 +0200
Subject: mvpp2: no need to check return value of debugfs_create functions
Patch-mainline: v5.4-rc1
Git-commit: e6882aa623f6fe0d80fa82ebf3ee78c353bffbe1
References: bsc#1154353

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.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nathan Huckleberry <nhuck@google.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c |   19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_debugfs.c
@@ -452,8 +452,6 @@ static int mvpp2_dbgfs_flow_port_init(st
 	struct dentry *port_dir;
 
 	port_dir = debugfs_create_dir(port->dev->name, parent);
-	if (IS_ERR(port_dir))
-		return PTR_ERR(port_dir);
 
 	port_entry = &port->priv->dbgfs_entries->port_flow_entries[port->id];
 
@@ -480,8 +478,6 @@ static int mvpp2_dbgfs_flow_entry_init(s
 	sprintf(flow_entry_name, "%02d", flow);
 
 	flow_entry_dir = debugfs_create_dir(flow_entry_name, parent);
-	if (!flow_entry_dir)
-		return -ENOMEM;
 
 	entry = &priv->dbgfs_entries->flow_entries[flow];
 
@@ -514,8 +510,6 @@ static int mvpp2_dbgfs_flow_init(struct
 	int i, ret;
 
 	flow_dir = debugfs_create_dir("flows", parent);
-	if (!flow_dir)
-		return -ENOMEM;
 
 	for (i = 0; i < MVPP2_N_PRS_FLOWS; i++) {
 		ret = mvpp2_dbgfs_flow_entry_init(flow_dir, priv, i);
@@ -539,8 +533,6 @@ static int mvpp2_dbgfs_prs_entry_init(st
 	sprintf(prs_entry_name, "%03d", tid);
 
 	prs_entry_dir = debugfs_create_dir(prs_entry_name, parent);
-	if (!prs_entry_dir)
-		return -ENOMEM;
 
 	entry = &priv->dbgfs_entries->prs_entries[tid];
 
@@ -578,8 +570,6 @@ static int mvpp2_dbgfs_prs_init(struct d
 	int i, ret;
 
 	prs_dir = debugfs_create_dir("parser", parent);
-	if (!prs_dir)
-		return -ENOMEM;
 
 	for (i = 0; i < MVPP2_PRS_TCAM_SRAM_SIZE; i++) {
 		ret = mvpp2_dbgfs_prs_entry_init(prs_dir, priv, i);
@@ -688,8 +678,6 @@ static int mvpp2_dbgfs_port_init(struct
 	struct dentry *port_dir;
 
 	port_dir = debugfs_create_dir(port->dev->name, parent);
-	if (IS_ERR(port_dir))
-		return PTR_ERR(port_dir);
 
 	debugfs_create_file("parser_entries", 0444, port_dir, port,
 			    &mvpp2_dbgfs_port_parser_fops);
@@ -716,15 +704,10 @@ void mvpp2_dbgfs_init(struct mvpp2 *priv
 	int ret, i;
 
 	mvpp2_root = debugfs_lookup(MVPP2_DRIVER_NAME, NULL);
-	if (!mvpp2_root) {
+	if (!mvpp2_root)
 		mvpp2_root = debugfs_create_dir(MVPP2_DRIVER_NAME, NULL);
-		if (IS_ERR(mvpp2_root))
-			return;
-	}
 
 	mvpp2_dir = debugfs_create_dir(name, mvpp2_root);
-	if (IS_ERR(mvpp2_dir))
-		return;
 
 	priv->dbgfs_dir = mvpp2_dir;
 	priv->dbgfs_entries = kzalloc(sizeof(*priv->dbgfs_entries), GFP_KERNEL);