linux-kernel - [PATCH 3/7] s390/qeth: Convert snprintf() to scnprintf()

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Message-ID: <YzHyniCyf+G/2xI8@fedora>
Date:   Mon, 26 Sep 2022 19:42:38 +0100
From:   Jules Irenge <jbi.octave@...il.com>
To:     borntraeger@...ux.ibm.com
Cc:     svens@...ux.ibm.com, linux-s390@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        agordeev@...ux.ibm.com
Subject: [PATCH 3/7] s390/qeth: Convert snprintf() to scnprintf()

Coccinnelle reports a warning
Warning: Use scnprintf or sprintf
Adding to that, there has been a slow migration from snprintf to scnprintf.
This LWN article explains the rationale for this change
https: //lwn.net/Articles/69419/
Ie. snprintf() returns what *would* be the resulting length,
while scnprintf() returns the actual length.

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
---
 drivers/s390/net/qeth_core_sys.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index 406be169173c..b40802d707a1 100644
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -500,9 +500,9 @@ static ssize_t qeth_hw_trap_show(struct device *dev,
 	struct qeth_card *card = dev_get_drvdata(dev);
 
 	if (card->info.hwtrap)
-		return snprintf(buf, 5, "arm\n");
+		return scnprintf(buf, 5, "arm\n");
 	else
-		return snprintf(buf, 8, "disarm\n");
+		return scnprintf(buf, 8, "disarm\n");
 }
 
 static ssize_t qeth_hw_trap_store(struct device *dev,
-- 
2.37.3