linux-kernel - [PATCH] counter/counter-sysfs: use sysfs

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Date:   Sun, 17 Oct 2021 14:01:06 -0500
From:   David Lechner <david@...hnology.com>
To:     linux-iio@...r.kernel.org
Cc:     David Lechner <david@...hnology.com>,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        linux-kernel@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH] counter/counter-sysfs: use sysfs_emit everywhere

In the counter subsystem, we are already using sysfs_emit(), but there
were a few places where we were still using sprintf() in *_show()
functions. For consistency and added protections, use sysfs_emit()
everywhere.

Suggested-by: Greg KH <gregkh@...uxfoundation.org>
Signed-off-by: David Lechner <david@...hnology.com>
---
 drivers/counter/counter-sysfs.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/counter/counter-sysfs.c b/drivers/counter/counter-sysfs.c
index 7bf8882ff54d..8c2d7c29ea59 100644
--- a/drivers/counter/counter-sysfs.c
+++ b/drivers/counter/counter-sysfs.c
@@ -113,7 +113,7 @@ static ssize_t counter_comp_u8_show(struct device *dev,
 		/* data should already be boolean but ensure just to be safe */
 		data = !!data;
 
-	return sprintf(buf, "%u\n", (unsigned int)data);
+	return sysfs_emit(buf, "%u\n", (unsigned int)data);
 }
 
 static ssize_t counter_comp_u8_store(struct device *dev,
@@ -196,7 +196,7 @@ static ssize_t counter_comp_u32_show(struct device *dev,
 	case COUNTER_COMP_COUNT_MODE:
 		return sysfs_emit(buf, "%s\n", counter_count_mode_str[data]);
 	default:
-		return sprintf(buf, "%u\n", (unsigned int)data);
+		return sysfs_emit(buf, "%u\n", (unsigned int)data);
 	}
 }
 
@@ -300,7 +300,7 @@ static ssize_t counter_comp_u64_show(struct device *dev,
 	if (err < 0)
 		return err;
 
-	return sprintf(buf, "%llu\n", (unsigned long long)data);
+	return sysfs_emit(buf, "%llu\n", (unsigned long long)data);
 }
 
 static ssize_t counter_comp_u64_store(struct device *dev,
@@ -539,7 +539,7 @@ static ssize_t counter_comp_id_show(struct device *dev,
 {
 	const size_t id = (size_t)to_counter_attribute(attr)->comp.priv;
 
-	return sprintf(buf, "%zu\n", id);
+	return sysfs_emit(buf, "%zu\n", id);
 }
 
 static int counter_comp_id_attr_create(struct device *const dev,
-- 
2.25.1