linux-kernel - [PATCH] platform/x86: lg-laptop: replace snprintf in show functions with sysfs

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Message-Id: <20211022090722.1065457-1-ye.guojin@zte.com.cn>
Date:   Fri, 22 Oct 2021 09:07:22 +0000
From:   cgel.zte@...il.com
To:     matan@...alib.org
Cc:     hdegoede@...hat.com, markgross@...nel.org,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ye Guojin <ye.guojin@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] platform/x86: lg-laptop: replace snprintf in show functions with sysfs_emit

From: Ye Guojin <ye.guojin@....com.cn>

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

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Ye Guojin <ye.guojin@....com.cn>
---
 drivers/platform/x86/lg-laptop.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/lg-laptop.c b/drivers/platform/x86/lg-laptop.c
index 7e9351c36389..ae9293024c77 100644
--- a/drivers/platform/x86/lg-laptop.c
+++ b/drivers/platform/x86/lg-laptop.c
@@ -330,7 +330,7 @@ static ssize_t fan_mode_show(struct device *dev,
 	status = r->integer.value & 0x01;
 	kfree(r);
 
-	return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buffer, "%d\n", status);
 }
 
 static ssize_t usb_charge_store(struct device *dev,
@@ -372,7 +372,7 @@ static ssize_t usb_charge_show(struct device *dev,
 
 	kfree(r);
 
-	return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buffer, "%d\n", status);
 }
 
 static ssize_t reader_mode_store(struct device *dev,
@@ -414,7 +414,7 @@ static ssize_t reader_mode_show(struct device *dev,
 
 	kfree(r);
 
-	return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buffer, "%d\n", status);
 }
 
 static ssize_t fn_lock_store(struct device *dev,
@@ -455,7 +455,7 @@ static ssize_t fn_lock_show(struct device *dev,
 	status = !!r->buffer.pointer[0];
 	kfree(r);
 
-	return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buffer, "%d\n", status);
 }
 
 static ssize_t battery_care_limit_store(struct device *dev,
@@ -520,7 +520,7 @@ static ssize_t battery_care_limit_show(struct device *dev,
 	if (status != 80 && status != 100)
 		status = 0;
 
-	return snprintf(buffer, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buffer, "%d\n", status);
 }
 
 static DEVICE_ATTR_RW(fan_mode);
-- 
2.25.1