linux-kernel - [PATCH] misc: enclosure: replace snprintf in show functions with sysfs

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Date:   Fri, 22 Oct 2021 09:06:04 +0000
From:   cgel.zte@...il.com
To:     arnd@...db.de
Cc:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        Ye Guojin <ye.guojin@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH] misc: enclosure: replace snprintf in show functions with sysfs_emit

From: Ye Guojin <ye.guojin@....com.cn>

coccicheck complains about the use of snprintf() in sysfs show
functions:
WARNING  use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Ye Guojin <ye.guojin@....com.cn>
---
 drivers/misc/enclosure.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c
index f950d0155876..1b010d9267c9 100644
--- a/drivers/misc/enclosure.c
+++ b/drivers/misc/enclosure.c
@@ -426,7 +426,7 @@ static ssize_t components_show(struct device *cdev,
 {
 	struct enclosure_device *edev = to_enclosure_device(cdev);
 
-	return snprintf(buf, 40, "%d\n", edev->components);
+	return sysfs_emit(buf, "%d\n", edev->components);
 }
 static DEVICE_ATTR_RO(components);
 
@@ -481,7 +481,7 @@ static ssize_t get_component_fault(struct device *cdev,
 
 	if (edev->cb->get_fault)
 		edev->cb->get_fault(edev, ecomp);
-	return snprintf(buf, 40, "%d\n", ecomp->fault);
+	return sysfs_emit(buf, "%d\n", ecomp->fault);
 }
 
 static ssize_t set_component_fault(struct device *cdev,
@@ -505,7 +505,7 @@ static ssize_t get_component_status(struct device *cdev,
 
 	if (edev->cb->get_status)
 		edev->cb->get_status(edev, ecomp);
-	return snprintf(buf, 40, "%s\n", enclosure_status[ecomp->status]);
+	return sysfs_emit(buf, "%s\n", enclosure_status[ecomp->status]);
 }
 
 static ssize_t set_component_status(struct device *cdev,
@@ -539,7 +539,7 @@ static ssize_t get_component_active(struct device *cdev,
 
 	if (edev->cb->get_active)
 		edev->cb->get_active(edev, ecomp);
-	return snprintf(buf, 40, "%d\n", ecomp->active);
+	return sysfs_emit(buf, "%d\n", ecomp->active);
 }
 
 static ssize_t set_component_active(struct device *cdev,
@@ -563,7 +563,7 @@ static ssize_t get_component_locate(struct device *cdev,
 
 	if (edev->cb->get_locate)
 		edev->cb->get_locate(edev, ecomp);
-	return snprintf(buf, 40, "%d\n", ecomp->locate);
+	return sysfs_emit(buf, "%d\n", ecomp->locate);
 }
 
 static ssize_t set_component_locate(struct device *cdev,
@@ -593,7 +593,7 @@ static ssize_t get_component_power_status(struct device *cdev,
 	if (ecomp->power_status == -1)
 		return (edev->cb->get_power_status) ? -EIO : -ENOTTY;
 
-	return snprintf(buf, 40, "%s\n", ecomp->power_status ? "on" : "off");
+	return sysfs_emit(buf, "%s\n", ecomp->power_status ? "on" : "off");
 }
 
 static ssize_t set_component_power_status(struct device *cdev,
@@ -623,7 +623,7 @@ static ssize_t get_component_type(struct device *cdev,
 {
 	struct enclosure_component *ecomp = to_enclosure_component(cdev);
 
-	return snprintf(buf, 40, "%s\n", enclosure_type[ecomp->type]);
+	return sysfs_emit(buf, "%s\n", enclosure_type[ecomp->type]);
 }
 
 static ssize_t get_component_slot(struct device *cdev,
@@ -638,7 +638,7 @@ static ssize_t get_component_slot(struct device *cdev,
 	else
 		slot = ecomp->number;
 
-	return snprintf(buf, 40, "%d\n", slot);
+	return sysfs_emit(buf, "%d\n", slot);
 }
 
 static DEVICE_ATTR(fault, S_IRUGO | S_IWUSR, get_component_fault,
-- 
2.25.1