linux-kernel - [PATCH v2] i2c: mux: Convert to use sysfs_emit

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Date:   Wed, 7 Dec 2022 10:48:33 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <peda@...ntia.se>
Cc:     <wsa+renesas@...g-engineering.com>, <linux-i2c@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] i2c: mux: 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>
---
v1 -> v2
Fix the code style.
 drivers/i2c/muxes/i2c-demux-pinctrl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c
index f7a7405d4350..28e0911920be 100644
--- a/drivers/i2c/muxes/i2c-demux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c
@@ -167,9 +167,9 @@ static ssize_t available_masters_show(struct device *dev,
 	int count = 0, i;

 	for (i = 0; i < priv->num_chan && count < PAGE_SIZE; i++)
-		count += scnprintf(buf + count, PAGE_SIZE - count, "%d:%pOF%c",
-				   i, priv->chan[i].parent_np,
-				   i == priv->num_chan - 1 ? '\n' : ' ');
+		count += sysfs_emit_at(buf, count, "%d:%pOF%c",
+				       i, priv->chan[i].parent_np,
+				       i == priv->num_chan - 1 ? '\n' : ' ');

 	return count;
 }
-- 
2.25.1