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Message-ID: <Y2tBJFSsyUzdb+eO@qemulion>
Date: Wed, 9 Nov 2022 11:26:52 +0530
From: Deepak R Varma <drv@...lo.com>
To: outreachy@...ts.linux.dev, Sven Van Asbroeck <TheSven73@...il.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH v2] staging: fieldbus: replace snprintf in show functions
with sysfs_emit
The show() methods should only use sysfs_emit() when formatting values
to be returned to the user space.
Ref: Documentation/filesystems/sysfs.rst
Issue identified by coccicheck.
Signed-off-by: Deepak R Varma <drv@...lo.com>
---
Changes in v2:
1. Switch to using sysfs_emit instead of scnprintf
2. Update patch subject and log accordingly
Feedback from gregkh@...uxfoundation.org
drivers/staging/fieldbus/dev_core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/fieldbus/dev_core.c b/drivers/staging/fieldbus/dev_core.c
index 5aab734606ea..d32599f4eb44 100644
--- a/drivers/staging/fieldbus/dev_core.c
+++ b/drivers/staging/fieldbus/dev_core.c
@@ -67,10 +67,10 @@ static ssize_t card_name_show(struct device *dev, struct device_attribute *attr,
struct fieldbus_dev *fb = dev_get_drvdata(dev);
/*
- * card_name was provided by child driver, could potentially be long.
- * protect against buffer overrun.
+ * sysfs provides PAGE_SIZE long buffer to take care of potentially
+ * long card_name provided by child driver.
*/
- return snprintf(buf, PAGE_SIZE, "%s\n", fb->card_name);
+ return sysfs_emit(buf, "%s\n", fb->card_name);
}
static DEVICE_ATTR_RO(card_name);
--
2.34.1
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