From patchwork Tue Sep 20 03:26:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 9340949 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CA8596077A for ; Tue, 20 Sep 2016 03:27:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AEF8B29BE4 for ; Tue, 20 Sep 2016 03:27:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A1D9529BEF; Tue, 20 Sep 2016 03:27:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B24CA29BE4 for ; Tue, 20 Sep 2016 03:27:27 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bmBiP-0003bJ-2M; Tue, 20 Sep 2016 03:27:25 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bmBiM-0003Zo-Gr for linux-mediatek@lists.infradead.org; Tue, 20 Sep 2016 03:27:23 +0000 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1805681509; Tue, 20 Sep 2016 11:26:51 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Tue, 20 Sep 2016 11:22:27 +0800 From: To: , Subject: [PATCH net-next] net: ethernet: mediatek: enhance with avoiding superfluous assignment inside mtk_get_ethtool_stats Date: Tue, 20 Sep 2016 11:26:48 +0800 Message-ID: <1474342008-22496-1-git-send-email-sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160919_202722_728409_86CA8F73 X-CRM114-Status: GOOD ( 10.45 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nbd@openwrt.org, keyhaede@gmail.com, netdev@vger.kernel.org, Sean Wang , linux-mediatek@lists.infradead.org, objelf@gmail.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sean Wang data_src is unchanged inside the loop, so this patch moves the assignment to outside the loop to avoid unnecessarily assignment Signed-off-by: Sean Wang --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 481f360..ca6b501 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2137,8 +2137,9 @@ static void mtk_get_ethtool_stats(struct net_device *dev, } } + data_src = (u64 *)hwstats; + do { - data_src = (u64 *)hwstats; data_dst = data; start = u64_stats_fetch_begin_irq(&hwstats->syncp);