linux-kernel - [PATCH 2/8] firmware: vpd: use kdtrndup when copying section key

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Date:   Tue, 23 May 2017 17:07:42 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Wei-Ning Huang <wnhuang@...gle.com>,
        Julius Werner <jwerner@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/8] firmware: vpd: use kdtrndup when copying section key

Instead of open-coding kstrndup with kzalloc + memcpy, let's use
the helper.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/firmware/google/vpd.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/google/vpd.c b/drivers/firmware/google/vpd.c
index 23a24a6d02c2..acf3f3cdc3f8 100644
--- a/drivers/firmware/google/vpd.c
+++ b/drivers/firmware/google/vpd.c
@@ -118,14 +118,13 @@ static int vpd_section_attrib_add(const u8 *key, s32 key_len,
 	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
-	info->key = kzalloc(key_len + 1, GFP_KERNEL);
+
+	info->key = kstrndup(key, key_len, GFP_KERNEL);
 	if (!info->key) {
 		ret = -ENOMEM;
 		goto free_info;
 	}
 
-	memcpy(info->key, key, key_len);
-
 	sysfs_bin_attr_init(&info->bin_attr);
 	info->bin_attr.attr.name = info->key;
 	info->bin_attr.attr.mode = 0444;
-- 
2.13.0.219.gdb65acc882-goog