linux-kernel - [PATCH] iio: light: bh1750: Convert to use sysfs_emit

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Date:   Wed, 7 Dec 2022 15:41:38 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <jic23@...nel.org>
Cc:     <tduszyns@...il.com>, <lars@...afoo.de>,
        <andriy.shevchenko@...ux.intel.com>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: light: bh1750: 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/light/bh1750.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/light/bh1750.c b/drivers/iio/light/bh1750.c
index 390c5b3ad4f6..ab682865885d 100644
--- a/drivers/iio/light/bh1750.c
+++ b/drivers/iio/light/bh1750.c
@@ -194,8 +194,7 @@ static ssize_t bh1750_show_int_time_available(struct device *dev,
 	const struct bh1750_chip_info *chip_info = data->chip_info;

 	for (i = chip_info->mtreg_min; i <= chip_info->mtreg_max; i += chip_info->inc)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06d ",
-				 chip_info->mtreg_to_usec * i);
+		len += sysfs_emit_at(buf, len, "0.%06d ", chip_info->mtreg_to_usec * i);

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

-- 
2.25.1