linux-kernel - [PATCH] platform/x86: sony-laptop: Convert to use sysfs_emit

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Message-ID: <202212081545178689771@zte.com.cn>
Date:   Thu, 8 Dec 2022 15:45:17 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <hdegoede@...hat.com>
Cc:     <malattia@...ux.it>, <markgross@...nel.org>,
        <platform-driver-x86@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] platform/x86: sony-laptop: 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/platform/x86/sony-laptop.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index a19aac70252f..7156ae2ad196 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -820,10 +820,9 @@ static ssize_t sony_nc_handles_show(struct device *dev,
 	int i;

 	for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
-		len += scnprintf(buffer + len, PAGE_SIZE - len, "0x%.4x ",
-				handles->cap[i]);
+		len += sysfs_emit_at(buffer, len, "0x%.4x ", handles->cap[i]);
 	}
-	len += scnprintf(buffer + len, PAGE_SIZE - len, "\n");
+	len += sysfs_emit_at(buffer, len, "\n");

 	return len;
 }
@@ -2173,10 +2172,9 @@ static ssize_t sony_nc_thermal_profiles_show(struct device *dev,

 	for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
 		if (!cnt || (th_handle->profiles & cnt))
-			idx += scnprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
-					snc_thermal_profiles[cnt]);
+			idx += sysfs_emit_at(buffer, idx, "%s ", snc_thermal_profiles[cnt]);
 	}
-	idx += scnprintf(buffer + idx, PAGE_SIZE - idx, "\n");
+	idx += sysfs_emit_at(buffer, idx, "\n");

 	return idx;
 }
-- 
2.25.1