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

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Date:   Wed, 7 Dec 2022 15:32:27 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <jic23@...nel.org>
Cc:     <lars@...afoo.de>, <andriy.shevchenko@...ux.intel.com>,
        <michael.hennerich@...log.com>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: adc: adi-axi-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/adi-axi-adc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index e8a8ea4140f1..20a6e7463552 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -240,8 +240,7 @@ static ssize_t in_voltage_scale_available_show(struct device *dev,
 	for (i = 0; i < conv->chip_info->num_scales; i++) {
 		const unsigned int *s = conv->chip_info->scale_table[i];

-		len += scnprintf(buf + len, PAGE_SIZE - len,
-				 "%u.%06u ", s[0], s[1]);
+		len += sysfs_emit_at(buf, len, "%u.%06u ", s[0], s[1]);
 	}
 	buf[len - 1] = '\n';

-- 
2.25.1