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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Cc: Jinjie Ruan <ruanjinjie@huawei.com>,
	Russell King <linux@armlinux.org.uk>,
	Kalle Valo <kvalo@kernel.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 035/148] wifi: mwifiex: debugfs: Drop unnecessary error check for debugfs_create_dir()
Date: Sun, 24 Mar 2024 19:48:19 -0400
Message-ID: <20240324235012.1356413-36-sashal@kernel.org>
In-Reply-To: <20240324235012.1356413-1-sashal@kernel.org>
References: <20240324235012.1356413-1-sashal@kernel.org>
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From: Jinjie Ruan <ruanjinjie@huawei.com>

[ Upstream commit 50180c7f8e3de7c2d87f619131776598fcb1478d ]

debugfs_create_dir() returns ERR_PTR and never return NULL.

As Russell suggested, this patch removes the error checking for
debugfs_create_dir(). This is because the DebugFS kernel API is developed
in a way that the caller can safely ignore the errors that occur during
the creation of DebugFS nodes. The debugfs APIs have a IS_ERR() judge in
start_creating() which can handle it gracefully. So these checks are
unnecessary.

Fixes: 5e6e3a92b9a4 ("wireless: mwifiex: initial commit for Marvell mwifiex driver")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20230903030216.1509013-3-ruanjinjie@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/marvell/mwifiex/debugfs.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/debugfs.c b/drivers/net/wireless/marvell/mwifiex/debugfs.c
index 0f62da50e11a2..63af04202d75f 100644
--- a/drivers/net/wireless/marvell/mwifiex/debugfs.c
+++ b/drivers/net/wireless/marvell/mwifiex/debugfs.c
@@ -977,9 +977,6 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
 	priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
 					       mwifiex_dfs_dir);
 
-	if (!priv->dfs_dev_dir)
-		return;
-
 	MWIFIEX_DFS_ADD_FILE(info);
 	MWIFIEX_DFS_ADD_FILE(debug);
 	MWIFIEX_DFS_ADD_FILE(getlog);
-- 
2.43.0