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

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Message-ID: <202212071553556022992@zte.com.cn>
Date:   Wed, 7 Dec 2022 15:53:55 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <jic23@...nel.org>
Cc:     <lars@...afoo.de>, <andriy.shevchenko@...ux.intel.com>,
        <miquel.raynal@...tlin.com>, <nuno.sa@...log.com>,
        <wsa+renesas@...g-engineering.com>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: st_sensors: 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/common/st_sensors/st_sensors_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
index c77d7bdcc121..44e374f84197 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.c
+++ b/drivers/iio/common/st_sensors/st_sensors_core.c
@@ -628,8 +628,7 @@ ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
 		if (sdata->sensor_settings->odr.odr_avl[i].hz == 0)
 			break;

-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
-				sdata->sensor_settings->odr.odr_avl[i].hz);
+		len += sysfs_emit_at(buf, len, "%d ", sdata->sensor_settings->odr.odr_avl[i].hz);
 	}
 	buf[len - 1] = '\n';

@@ -651,7 +650,7 @@ ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
 		q = sdata->sensor_settings->fs.fs_avl[i].gain / 1000000;
 		r = sdata->sensor_settings->fs.fs_avl[i].gain % 1000000;

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

-- 
2.25.1