linux-kernel - [PATCH] iio: adc: nau7802: Convert to use sysfs_emit

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Message-ID: <202212071533389702351@zte.com.cn>
Date:   Wed, 7 Dec 2022 15:33:38 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <andriy.shevchenko@...ux.intel.com>
Cc:     <jic23@...nel.org>, <lars@...afoo.de>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: adc: nau7802: 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/adc/nau7802.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c
index c1261ecd400c..4dbf54979733 100644
--- a/drivers/iio/adc/nau7802.c
+++ b/drivers/iio/adc/nau7802.c
@@ -86,8 +86,7 @@ static ssize_t nau7802_show_scales(struct device *dev,
 	int i, len = 0;

 	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09d ",
-				 st->scale_avail[i]);
+		len += sysfs_emit_at(buf, len, "0.%09d ", st->scale_avail[i]);

 	buf[len-1] = '\n';

-- 
2.25.1