linux-kernel - [PATCH] usbip: convert sysfs snprintf to sysfs

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Date:   Fri, 14 Oct 2022 19:06:06 +0800
From:   Xuezhi Zhang <zhangxuezhi3@...il.com>
To:     valentina.manea.m@...il.com, shuah@...nel.org,
        gregkh@...uxfoundation.org
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuezhi Zhang <zhangxuezhi1@...lpad.com>
Subject: [PATCH] usbip: convert sysfs snprintf to sysfs_emit

From: Xuezhi Zhang <zhangxuezhi1@...lpad.com>

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: Xuezhi Zhang <zhangxuezhi1@...lpad.com>
---
 drivers/usb/usbip/stub_dev.c   | 2 +-
 drivers/usb/usbip/vudc_sysfs.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c
index 3c6d452e3bf4..f92047d860f0 100644
--- a/drivers/usb/usbip/stub_dev.c
+++ b/drivers/usb/usbip/stub_dev.c
@@ -30,7 +30,7 @@ static ssize_t usbip_status_show(struct device *dev,
 	status = sdev->ud.status;
 	spin_unlock_irq(&sdev->ud.lock);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(buf, "%d\n", status);
 }
 static DEVICE_ATTR_RO(usbip_status);
 
diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c
index c95e6b2bfd32..907a43a00896 100644
--- a/drivers/usb/usbip/vudc_sysfs.c
+++ b/drivers/usb/usbip/vudc_sysfs.c
@@ -242,7 +242,7 @@ static ssize_t usbip_status_show(struct device *dev,
 	status = udc->ud.status;
 	spin_unlock_irq(&udc->ud.lock);
 
-	return snprintf(out, PAGE_SIZE, "%d\n", status);
+	return sysfs_emit(out, "%d\n", status);
 }
 static DEVICE_ATTR_RO(usbip_status);
 
-- 
2.25.1