linux-kernel - [PATCH] iio: humidity: hts211: Convert to use sysfs_emit

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Message-ID: <202212071539074382512@zte.com.cn>
Date:   Wed, 7 Dec 2022 15:39:07 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <jic23@...nel.org>
Cc:     <lorenzo@...nel.org>, <andriy.shevchenko@...ux.intel.com>,
        <lars@...afoo.de>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: humidity: hts211: Convert to use sysfs_emit_at() API

From: ye xingchen <ye.xingchen@....com.cn>

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
---
 drivers/iio/humidity/hts221_core.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c
index 2a413da87b76..e4ae4ffb9ffb 100644
--- a/drivers/iio/humidity/hts221_core.c
+++ b/drivers/iio/humidity/hts221_core.c
@@ -200,8 +200,7 @@ static ssize_t hts221_sysfs_sampling_freq(struct device *dev,
 	ssize_t len = 0;

 	for (i = 0; i < ARRAY_SIZE(hts221_odr_table); i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				 hts221_odr_table[i].hz);
+		len += sysfs_emit_at(buf, len, "%d ", hts221_odr_table[i].hz);
 	buf[len - 1] = '\n';

 	return len;
@@ -217,8 +216,7 @@ hts221_sysfs_rh_oversampling_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(avg->avg_avl); i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				 avg->avg_avl[i]);
+		len += sysfs_emit_at(buf, len, "%d ", avg->avg_avl[i]);
 	buf[len - 1] = '\n';

 	return len;
@@ -234,8 +232,7 @@ hts221_sysfs_temp_oversampling_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(avg->avg_avl); i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				 avg->avg_avl[i]);
+		len += sysfs_emit_at(buf, len, "%d ", avg->avg_avl[i]);
 	buf[len - 1] = '\n';

 	return len;
-- 
2.25.1