linux-kernel - [PATCH] HID: core: use scnprintf in modalias

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Message-Id: <1447535288-12523-1-git-send-email-linux@rasmusvillemoes.dk>
Date:	Sat, 14 Nov 2015 22:08:08 +0100
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Jiri Kosina <jikos@...nel.org>
Cc:	Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] HID: core: use scnprintf in modalias_show()

scnprintf() exists to provide these semantics, so we might as well use
it.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 drivers/hid/hid-core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index c6f7a694f67a..efa3660e23a0 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2223,12 +2223,9 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
 			     char *buf)
 {
 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
-	int len;
-
-	len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
-		       hdev->bus, hdev->group, hdev->vendor, hdev->product);
 
-	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+	return scnprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
+			 hdev->bus, hdev->group, hdev->vendor, hdev->product);
 }
 static DEVICE_ATTR_RO(modalias);
 
-- 
2.6.1

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