netdev - [PATCH v2 -next] NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20191204071822.116115-1-maowenan@huawei.com>
Date:   Wed, 4 Dec 2019 15:18:22 +0800
From:   Mao Wenan <maowenan@...wei.com>
To:     <davem@...emloft.net>, <gregkh@...uxfoundation.org>,
        <alexios.zavras@...el.com>, <oneukum@...e.com>,
        <tglx@...utronix.de>, <julia.lawall@...ia.fr>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>, Mao Wenan <maowenan@...wei.com>,
        "Hulk Robot" <hulkci@...wei.com>
Subject: [PATCH v2 -next] NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().

Convert cpu_to_le16(le16_to_cpu(frame->datalen) + len) to
use le16_add_cpu(), which is more concise and does the same thing. 

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Mao Wenan <maowenan@...wei.com>
---
 v2: change log as julia suggest.
 drivers/nfc/port100.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 604dba4..8e4d355 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -565,7 +565,7 @@ static void port100_tx_update_payload_len(void *_frame, int len)
 {
 	struct port100_frame *frame = _frame;
 
-	frame->datalen = cpu_to_le16(le16_to_cpu(frame->datalen) + len);
+	le16_add_cpu(&frame->datalen, len);
 }
 
 static bool port100_rx_frame_is_valid(void *_frame)
-- 
2.7.4