linux-kernel - [PATCH] ptp: Replace snprintf in show functions with sysfs

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Date:   Wed, 10 Nov 2021 02:23:31 +0000
From:   cgel.zte@...il.com
To:     richardcochran@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jing Yao <yao.jing2@....com.cn>, Zeal Robot <zealci@....com.cn>
Subject: [PATCH] ptp: Replace snprintf in show functions with  sysfs_emit

From: Jing Yao <yao.jing2@....com.cn>

coccicheck complains about the use of snprintf() in sysfs show
functions:
WARNING use scnprintf or sprintf

Use sysfs_emit instead of scnprintf, snprintf or sprintf makes more
sense.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Jing Yao <yao.jing2@....com.cn>
---
 drivers/ptp/ptp_sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
index 41b92dc2f011..867435df912a 100644
--- a/drivers/ptp/ptp_sysfs.c
+++ b/drivers/ptp/ptp_sysfs.c
@@ -86,7 +86,7 @@ static ssize_t extts_fifo_show(struct device *dev,
 	if (!qcnt)
 		goto out;
 
-	cnt = snprintf(page, PAGE_SIZE, "%u %lld %u\n",
+	cnt = sysfs_emit(page, "%u %lld %u\n",
 		       event.index, event.t.sec, event.t.nsec);
 out:
 	mutex_unlock(&ptp->tsevq_mux);
@@ -387,7 +387,7 @@ static ssize_t ptp_pin_show(struct device *dev, struct device_attribute *attr,
 
 	mutex_unlock(&ptp->pincfg_mux);
 
-	return snprintf(page, PAGE_SIZE, "%u %u\n", func, chan);
+	return sysfs_emit(page, "%u %u\n", func, chan);
 }
 
 static ssize_t ptp_pin_store(struct device *dev, struct device_attribute *attr,
-- 
2.25.1