linux-kernel - [PATCH] ti: wl18xx: no need to check return value of debugfs

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Message-Id: <20190122152151.16139-28-gregkh@linuxfoundation.org>
Date:   Tue, 22 Jan 2019 16:21:27 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Tony Lindgren <tony@...mide.com>,
        linux-wireless@...r.kernel.org
Subject: [PATCH] ti: wl18xx: 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.

Cc: Kalle Valo <kvalo@...eaurora.org>
Cc: Tony Lindgren <tony@...mide.com>
Cc: linux-wireless@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/wireless/ti/wl18xx/debugfs.c | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/drivers/net/wireless/ti/wl18xx/debugfs.c b/drivers/net/wireless/ti/wl18xx/debugfs.c
index 597e934c4630..5f4ec997ca59 100644
--- a/drivers/net/wireless/ti/wl18xx/debugfs.c
+++ b/drivers/net/wireless/ti/wl18xx/debugfs.c
@@ -422,20 +422,10 @@ static const struct file_operations radar_debug_mode_ops = {
 int wl18xx_debugfs_add_files(struct wl1271 *wl,
 			     struct dentry *rootdir)
 {
-	int ret = 0;
-	struct dentry *entry, *stats, *moddir;
+	struct dentry *stats, *moddir;
 
 	moddir = debugfs_create_dir(KBUILD_MODNAME, rootdir);
-	if (!moddir || IS_ERR(moddir)) {
-		entry = moddir;
-		goto err;
-	}
-
 	stats = debugfs_create_dir("fw_stats", moddir);
-	if (!stats || IS_ERR(stats)) {
-		entry = stats;
-		goto err;
-	}
 
 	DEBUGFS_ADD(clear_fw_stats, stats);
 
@@ -590,12 +580,4 @@ int wl18xx_debugfs_add_files(struct wl1271 *wl,
 	DEBUGFS_ADD(dynamic_fw_traces, moddir);
 
 	return 0;
-
-err:
-	if (IS_ERR(entry))
-		ret = PTR_ERR(entry);
-	else
-		ret = -ENOMEM;
-
-	return ret;
 }
-- 
2.20.1