linux-kernel - [PATCH v1 1/5] usb: fotg210-hcd: use sysfs

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Message-Id: <20230120154437.22025-1-andriy.shevchenko@linux.intel.com>
Date:   Fri, 20 Jan 2023 17:44:33 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/5] usb: fotg210-hcd: use sysfs_emit() to instead of scnprintf()

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: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/usb/fotg210/fotg210-hcd.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/fotg210/fotg210-hcd.c b/drivers/usb/fotg210/fotg210-hcd.c
index 7bd1e8f3080d..46752a75c428 100644
--- a/drivers/usb/fotg210/fotg210-hcd.c
+++ b/drivers/usb/fotg210/fotg210-hcd.c
@@ -4686,14 +4686,11 @@ static ssize_t uframe_periodic_max_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct fotg210_hcd *fotg210;
-	int n;
 
 	fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
-	n = scnprintf(buf, PAGE_SIZE, "%d\n", fotg210->uframe_periodic_max);
-	return n;
+	return sysfs_emit(buf, "%d\n", fotg210->uframe_periodic_max);
 }
 
-
 static ssize_t uframe_periodic_max_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
-- 
2.39.0