linux-kernel - [PATCH] iio: light: lv0104cs: Convert to use sysfs_emit

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Message-ID: <202212071545177462713@zte.com.cn>
Date:   Wed, 7 Dec 2022 15:45:17 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <andriy.shevchenko@...ux.intel.com>
Cc:     <jic23@...nel.org>, <lars@...afoo.de>,
        <u.kleine-koenig@...gutronix.de>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: light: lv0104cs: 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/lv0104cs.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/light/lv0104cs.c b/drivers/iio/light/lv0104cs.c
index c041fa0faa5d..c0e82ae12920 100644
--- a/drivers/iio/light/lv0104cs.c
+++ b/drivers/iio/light/lv0104cs.c
@@ -397,9 +397,9 @@ static ssize_t lv0104cs_show_calibscale_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(lv0104cs_calibscales); i++) {
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
-				lv0104cs_calibscales[i].val,
-				lv0104cs_calibscales[i].val2);
+		len += sysfs_emit_at(buf, len, "%d.%06d ",
+				     lv0104cs_calibscales[i].val,
+				     lv0104cs_calibscales[i].val2);
 	}

 	buf[len - 1] = '\n';
@@ -414,9 +414,9 @@ static ssize_t lv0104cs_show_scale_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(lv0104cs_scales); i++) {
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
-				lv0104cs_scales[i].val,
-				lv0104cs_scales[i].val2);
+		len += sysfs_emit_at(buf, len, "%d.%06d ",
+				     lv0104cs_scales[i].val,
+				     lv0104cs_scales[i].val2);
 	}

 	buf[len - 1] = '\n';
@@ -431,9 +431,9 @@ static ssize_t lv0104cs_show_int_time_avail(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(lv0104cs_int_times); i++) {
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
-				lv0104cs_int_times[i].val,
-				lv0104cs_int_times[i].val2);
+		len += sysfs_emit_at(buf, len, "%d.%06d ",
+				     lv0104cs_int_times[i].val,
+				     lv0104cs_int_times[i].val2);
 	}

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