linux-kernel - [PATCH] Input: atkbd - simplify atkbd_show_force

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Message-Id: <20210421201639.1541945-1-linux@rasmusvillemoes.dk>
Date:   Wed, 21 Apr 2021 22:16:39 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: atkbd - simplify atkbd_show_force_release()

We can just include the newline in the format string, and scnprintf()
guarantees nul-termination. These days, sysfs_emit() is
preferred in sysfs ->show methods, so switch to that.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 drivers/input/keyboard/atkbd.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index edc613efc158..b146a3ec631a 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -1492,13 +1492,8 @@ static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t coun
 
 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
 {
-	size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
-			       ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
-
-	buf[len++] = '\n';
-	buf[len] = '\0';
-
-	return len;
+	return sysfs_emit(buf, "%*pbl\n",
+			  ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
 }
 
 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
-- 
2.29.2