linux-kernel - [PATCH -next] bus/fsl-mc: Convert sprintf()/snprintf() to sysfs

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Message-ID: <20240904012709.2022574-1-lihongbo22@huawei.com>
Date: Wed, 4 Sep 2024 09:27:09 +0800
From: Hongbo Li <lihongbo22@...wei.com>
To: <parthiban.veerasooran@...rochip.com>, <christian.gromm@...rochip.com>
CC: <linux-kernel@...r.kernel.org>, <lihongbo22@...wei.com>
Subject: [PATCH -next] bus/fsl-mc: Convert sprintf()/snprintf() to sysfs_emit()

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.

sysfs_emit validates assumptions made by sysfs and is the correct
mechanism to format data for sysfs. So we can do this conversion.

Signed-off-by: Hongbo Li <lihongbo22@...wei.com>
---
 drivers/bus/fsl-mc/fsl-mc-bus.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
index dd68b8191a0a..f5c98fe6c879 100644
--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -175,8 +175,8 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 {
 	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
 
-	return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
-		       mc_dev->obj_desc.type);
+	return sysfs_emit(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
+			  mc_dev->obj_desc.type);
 }
 static DEVICE_ATTR_RO(modalias);
 
@@ -202,7 +202,7 @@ static ssize_t driver_override_show(struct device *dev,
 {
 	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", mc_dev->driver_override);
+	return sysfs_emit(buf, "%s\n", mc_dev->driver_override);
 }
 static DEVICE_ATTR_RW(driver_override);
 
-- 
2.34.1