linux-kernel - [PATCH] iio: trigger: stm32-timer: Convert to use sysfs_emit

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Message-ID: <202212071555220843038@zte.com.cn>
Date:   Wed, 7 Dec 2022 15:55:22 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <andriy.shevchenko@...ux.intel.com>
Cc:     <jic23@...nel.org>, <lars@...afoo.de>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...s.st.com>, <fabrice.gasnier@...s.st.com>,
        <paul@...pouillou.net>, <linux-iio@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: trigger: stm32-timer: 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/trigger/stm32-timer-trigger.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c
index 3643c4afae67..eadfb255f7b7 100644
--- a/drivers/iio/trigger/stm32-timer-trigger.c
+++ b/drivers/iio/trigger/stm32-timer-trigger.c
@@ -352,8 +352,7 @@ static ssize_t stm32_tt_show_master_mode_avail(struct device *dev,
 		master_mode_max = MASTER_MODE_MAX;

 	for (i = 0; i <= master_mode_max; i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len,
-			"%s ", master_mode_table[i]);
+		len += sysfs_emit_at(buf, len, "%s ", master_mode_table[i]);

 	/* replace trailing space by newline */
 	buf[len - 1] = '\n';
-- 
2.25.1