linux-kernel - [PATCH -v2] platform/x86: msi-laptop: Use sysfs

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Message-Id: <20240419063649.2396461-1-jiangyunshui@kylinos.cn>
Date: Fri, 19 Apr 2024 14:36:49 +0800
From: yunshui <jiangyunshui@...inos.cn>
To: linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org
Cc: hdegoede@...hat.com,
	yunshui <jiangyunshui@...inos.cn>,
	Ai Chao <aichao@...inos.cn>
Subject: [PATCH -v2] platform/x86: msi-laptop: Use sysfs_emit() to replace sprintf()

As Documentation/filesystems/sysfs.rst suggested,
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.

Signed-off-by: yunshui <jiangyunshui@...inos.cn>
Reviewed-by: Ai Chao <aichao@...inos.cn>
---
 drivers/platform/x86/msi-laptop.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
index f4c6c36e05a5..e5391a37014d 100644
--- a/drivers/platform/x86/msi-laptop.c
+++ b/drivers/platform/x86/msi-laptop.c
@@ -317,7 +317,7 @@ static ssize_t show_wlan(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%i\n", enabled);
+	return sysfs_emit(buf, "%i\n", enabled);
 }
 
 static ssize_t store_wlan(struct device *dev,
@@ -341,7 +341,7 @@ static ssize_t show_bluetooth(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%i\n", enabled);
+	return sysfs_emit(buf, "%i\n", enabled);
 }
 
 static ssize_t store_bluetooth(struct device *dev,
@@ -364,7 +364,7 @@ static ssize_t show_threeg(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%i\n", threeg_s);
+	return sysfs_emit(buf, "%i\n", threeg_s);
 }
 
 static ssize_t store_threeg(struct device *dev,
@@ -383,7 +383,7 @@ static ssize_t show_lcd_level(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%i\n", ret);
+	return sysfs_emit(buf, "%i\n", ret);
 }
 
 static ssize_t store_lcd_level(struct device *dev,
@@ -413,7 +413,7 @@ static ssize_t show_auto_brightness(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%i\n", ret);
+	return sysfs_emit(buf, "%i\n", ret);
 }
 
 static ssize_t store_auto_brightness(struct device *dev,
@@ -443,7 +443,7 @@ static ssize_t show_touchpad(struct device *dev,
 	if (result < 0)
 		return result;
 
-	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
+	return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TOUCHPAD_MASK));
 }
 
 static ssize_t show_turbo(struct device *dev,
@@ -457,7 +457,7 @@ static ssize_t show_turbo(struct device *dev,
 	if (result < 0)
 		return result;
 
-	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
+	return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_TURBO_MASK));
 }
 
 static ssize_t show_eco(struct device *dev,
@@ -471,7 +471,7 @@ static ssize_t show_eco(struct device *dev,
 	if (result < 0)
 		return result;
 
-	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
+	return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_ECO_MASK));
 }
 
 static ssize_t show_turbo_cooldown(struct device *dev,
@@ -485,7 +485,7 @@ static ssize_t show_turbo_cooldown(struct device *dev,
 	if (result < 0)
 		return result;
 
-	return sprintf(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
+	return sysfs_emit(buf, "%i\n", (!!(rdata & MSI_STANDARD_EC_TURBO_MASK)) |
 		(!!(rdata & MSI_STANDARD_EC_TURBO_COOLDOWN_MASK) << 1));
 }
 
@@ -500,7 +500,7 @@ static ssize_t show_auto_fan(struct device *dev,
 	if (result < 0)
 		return result;
 
-	return sprintf(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
+	return sysfs_emit(buf, "%i\n", !!(rdata & MSI_STANDARD_EC_AUTOFAN_MASK));
 }
 
 static ssize_t store_auto_fan(struct device *dev,
-- 
2.34.1