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

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Date:   Wed, 4 Dec 2019 14:37:17 +0800
From:   Mao Wenan <maowenan@...wei.com>
To:     <davem@...emloft.net>, <gregkh@...uxfoundation.org>,
        <alexios.zavras@...el.com>, <oneukum@...e.com>,
        <tglx@...utronix.de>
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 -next] NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().

It is better to convert cpu_to_le16(le16_to_cpu(frame->datalen) + len) to
use le16_add_cpu().

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Mao Wenan <maowenan@...wei.com>
---
 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