linux-kernel - [PATCH v1] platform/x86: huawei-wmi: use sysfs

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Date: Tue, 19 Mar 2024 14:42:43 +0800
From: Ai Chao <aichao@...inos.cn>
To: hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ai Chao <aichao@...inos.cn>
Subject: [PATCH v1] platform/x86: huawei-wmi: use sysfs_emit() instead of sprintf()

Follow the advice in Documentation/filesystems/sysfs.rst:
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.

Signed-off-by: Ai Chao <aichao@...inos.cn>
---
 drivers/platform/x86/huawei-wmi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/huawei-wmi.c b/drivers/platform/x86/huawei-wmi.c
index dde139c69945..09d476dd832e 100644
--- a/drivers/platform/x86/huawei-wmi.c
+++ b/drivers/platform/x86/huawei-wmi.c
@@ -379,7 +379,7 @@ static ssize_t charge_control_start_threshold_show(struct device *dev,
 	if (err)
 		return err;
 
-	return sprintf(buf, "%d\n", start);
+	return sysfs_emit(buf, "%d\n", start);
 }
 
 static ssize_t charge_control_end_threshold_show(struct device *dev,
@@ -392,7 +392,7 @@ static ssize_t charge_control_end_threshold_show(struct device *dev,
 	if (err)
 		return err;
 
-	return sprintf(buf, "%d\n", end);
+	return sysfs_emit(buf, "%d\n", end);
 }
 
 static ssize_t charge_control_thresholds_show(struct device *dev,
@@ -405,7 +405,7 @@ static ssize_t charge_control_thresholds_show(struct device *dev,
 	if (err)
 		return err;
 
-	return sprintf(buf, "%d %d\n", start, end);
+	return sysfs_emit(buf, "%d %d\n", start, end);
 }
 
 static ssize_t charge_control_start_threshold_store(struct device *dev,
@@ -562,7 +562,7 @@ static ssize_t fn_lock_state_show(struct device *dev,
 	if (err)
 		return err;
 
-	return sprintf(buf, "%d\n", on);
+	return sysfs_emit(buf, "%d\n", on);
 }
 
 static ssize_t fn_lock_state_store(struct device *dev,
-- 
2.25.1