linux-kernel - [PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()

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Message-ID: <202212021705128095546@zte.com.cn>
Date:   Fri, 2 Dec 2022 17:05:12 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <hdegoede@...hat.com>
Cc:     <justin.ernst@....com>, <markgross@...nel.org>,
        <platform-driver-x86@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] platform/x86: use sysfs_emit() to instead of scnprintf()

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/uv_sysfs.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/x86/uv_sysfs.c b/drivers/platform/x86/uv_sysfs.c
index 625b0b79d185..73fc38ee7430 100644
--- a/drivers/platform/x86/uv_sysfs.c
+++ b/drivers/platform/x86/uv_sysfs.c
@@ -119,12 +119,12 @@ struct uv_hub {

 static ssize_t hub_name_show(struct uv_bios_hub_info *hub_info, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->name);
+	return sysfs_emit(buf, "%s\n", hub_info->name);
 }

 static ssize_t hub_location_show(struct uv_bios_hub_info *hub_info, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", hub_info->location);
+	return sysfs_emit(buf, "%s\n", hub_info->location);
 }

 static ssize_t hub_partition_show(struct uv_bios_hub_info *hub_info, char *buf)
@@ -460,12 +460,12 @@ struct uv_pci_top_obj {

 static ssize_t uv_pci_type_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->type);
+	return sysfs_emit(buf, "%s\n", top_obj->type);
 }

 static ssize_t uv_pci_location_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->location);
+	return sysfs_emit(buf, "%s\n", top_obj->location);
 }

 static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)
@@ -475,7 +475,7 @@ static ssize_t uv_pci_iio_stack_show(struct uv_pci_top_obj *top_obj, char *buf)

 static ssize_t uv_pci_ppb_addr_show(struct uv_pci_top_obj *top_obj, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", top_obj->ppb_addr);
+	return sysfs_emit(buf, "%s\n", top_obj->ppb_addr);
 }

 static ssize_t uv_pci_slot_show(struct uv_pci_top_obj *top_obj, char *buf)
@@ -737,7 +737,7 @@ static ssize_t coherence_id_show(struct kobject *kobj,
 static ssize_t uv_type_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "%s\n", uv_type_string());
+	return sysfs_emit(buf, "%s\n", uv_type_string());
 }

 static ssize_t uv_archtype_show(struct kobject *kobj,
@@ -749,13 +749,13 @@ static ssize_t uv_archtype_show(struct kobject *kobj,
 static ssize_t uv_hub_type_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_hub_type());
+	return sysfs_emit(buf, "0x%x\n", uv_hub_type());
 }

 static ssize_t uv_hubless_show(struct kobject *kobj,
 			struct kobj_attribute *attr, char *buf)
 {
-	return scnprintf(buf, PAGE_SIZE, "0x%x\n", uv_get_hubless_system());
+	return sysfs_emit(buf, "0x%x\n", uv_get_hubless_system());
 }

 static struct kobj_attribute partition_id_attr =
-- 
2.25.1