linux-kernel - [PATCH] iio: ad7768-1: Convert to use sysfs_emit

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Date:   Wed, 7 Dec 2022 15:31:08 +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: ad7768-1: 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/ad7768-1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c
index 70a25949142c..eea796a3f83c 100644
--- a/drivers/iio/adc/ad7768-1.c
+++ b/drivers/iio/adc/ad7768-1.c
@@ -346,7 +346,7 @@ static ssize_t ad7768_sampling_freq_avail(struct device *dev,
 	for (i = 0; i < ARRAY_SIZE(ad7768_clk_config); i++) {
 		freq = DIV_ROUND_CLOSEST(st->mclk_freq,
 					 ad7768_clk_config[i].clk_div);
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", freq);
+		len += sysfs_emit_at(buf, len, "%d ", freq);
 	}

 	buf[len - 1] = '\n';
-- 
2.25.1