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

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Message-Id: <20190122152151.16139-43-gregkh@linuxfoundation.org>
Date:   Tue, 22 Jan 2019 16:21:42 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>
Subject: [PATCH] timekeeping_debug: 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: John Stultz <john.stultz@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 kernel/time/timekeeping_debug.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c
index 86489950d690..b73e8850e58d 100644
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -37,15 +37,8 @@ DEFINE_SHOW_ATTRIBUTE(tk_debug_sleep_time);
 
 static int __init tk_debug_sleep_time_init(void)
 {
-	struct dentry *d;
-
-	d = debugfs_create_file("sleep_time", 0444, NULL, NULL,
-		&tk_debug_sleep_time_fops);
-	if (!d) {
-		pr_err("Failed to create sleep_time debug file\n");
-		return -ENOMEM;
-	}
-
+	debugfs_create_file("sleep_time", 0444, NULL, NULL,
+			    &tk_debug_sleep_time_fops);
 	return 0;
 }
 late_initcall(tk_debug_sleep_time_init);
-- 
2.20.1