linux-kernel - [PATCH] arm: replace snprintf in show functions with sysfs

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Date:   Tue, 12 Oct 2021 20:22:56 -0700
From:   Qing Wang <wangqing@...o.com>
To:     Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Qing Wang <wangqing@...o.com>
Subject: [PATCH] arm: replace snprintf in show functions with sysfs_emit

coccicheck complains about the use of snprintf() in sysfs show functions:

WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <wangqing@...o.com>
---
 arch/arm/mm/cache-l2x0-pmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/cache-l2x0-pmu.c b/arch/arm/mm/cache-l2x0-pmu.c
index 993fefd..a9bd05b 100644
--- a/arch/arm/mm/cache-l2x0-pmu.c
+++ b/arch/arm/mm/cache-l2x0-pmu.c
@@ -343,7 +343,7 @@ static ssize_t l2x0_pmu_event_show(struct device *dev,
 	struct l2x0_event_attribute *lattr;
 
 	lattr = container_of(attr, typeof(*lattr), attr);
-	return snprintf(buf, PAGE_SIZE, "config=0x%x\n", lattr->config);
+	return sysfs_emit(buf, "config=0x%x\n", lattr->config);
 }
 
 static umode_t l2x0_pmu_event_attr_is_visible(struct kobject *kobj,
-- 
2.7.4