linux-kernel - [tip:timers/core] timekeeping/debug: No need to check return value of debugfs

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Date:   Tue, 29 Jan 2019 11:12:56 -0800
From:   tip-bot for Greg Kroah-Hartman <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, gregkh@...uxfoundation.org, sboyd@...nel.org,
        john.stultz@...aro.org, hpa@...or.com,
        linux-kernel@...r.kernel.org, mingo@...nel.org
Subject: [tip:timers/core] timekeeping/debug: No need to check return value
 of debugfs_create functions

Commit-ID:  ae503ab04913794b12e1939caa75aa091062a1b3
Gitweb:     https://git.kernel.org/tip/ae503ab04913794b12e1939caa75aa091062a1b3
Author:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
AuthorDate: Tue, 22 Jan 2019 16:21:42 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 29 Jan 2019 20:08:41 +0100

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.

Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Stephen Boyd <sboyd@...nel.org>
Link: https://lkml.kernel.org/r/20190122152151.16139-43-gregkh@linuxfoundation.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);