linux-kernel - [PATCH] iio: adc: vf610_adc: Convert to use sysfs_emit

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Date:   Wed, 7 Dec 2022 15:34:51 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <jic23@...nel.org>
Cc:     <haibo.chen@....com>, <andriy.shevchenko@...ux.intel.com>,
        <lars@...afoo.de>, <linux-iio@...r.kernel.org>,
        <linux-imx@....com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: adc: vf610_adc: 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/vf610_adc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index ae31aafd2653..dbf80f5f674b 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -606,8 +606,7 @@ static ssize_t vf610_show_samp_freq_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(info->sample_freq_avail); i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len,
-			"%u ", info->sample_freq_avail[i]);
+		len += sysfs_emit_at(buf, len, "%u ", info->sample_freq_avail[i]);

 	/* replace trailing space by newline */
 	buf[len - 1] = '\n';
-- 
2.25.1