linux-kernel - Re: [PATCH v3.5 18/19] rtlwifi: slight optimization of addr compare

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Date:	Mon, 6 Jan 2014 14:53:03 -0500
From:	"John W. Linville" <linville@...driver.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	Ding Tianhong <dingtianhong@...wei.com>,
	Larry Finger <Larry.Finger@...inger.net>,
	Chaoming Li <chaoming_li@...lsil.com.cn>,
	linux-wireless@...r.kernel.org, Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3.5 18/19] rtlwifi: slight optimization of addr compare

On Thu, Dec 26, 2013 at 04:47:50PM +0400, Sergei Shtylyov wrote:
> Hello.
> 
> On 26-12-2013 15:41, Ding Tianhong wrote:
> 
> >Use possibly more efficient ether_addr_equal_unaligned
> >instead of memcmp.
> 
> >Cc: Larry Finger <Larry.Finger@...inger.net>
> >Cc: Chaoming Li <chaoming_li@...lsil.com.cn>
> >Cc: John W. Linville <linville@...driver.com>
> >Cc: linux-wireless@...r.kernel.org
> >Cc: netdev@...r.kernel.org
> >Cc: linux-kernel@...r.kernel.org
> >Signed-off-by: Weilong Chen <chenweilong@...wei.com>
> >Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
> >---
> >  drivers/net/wireless/rtlwifi/cam.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> >diff --git a/drivers/net/wireless/rtlwifi/cam.c b/drivers/net/wireless/rtlwifi/cam.c
> >index 0e510f7..0276153 100644
> >--- a/drivers/net/wireless/rtlwifi/cam.c
> >+++ b/drivers/net/wireless/rtlwifi/cam.c
> [...]
> >@@ -335,7 +335,7 @@ void rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr)
> >  		addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
> >  		bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
> >  		if (((bitmap & BIT(0)) == BIT(0)) &&
> >-		    (memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
> >+		    (ether_addr_equal_unaligned(addr, sta_addr))) {
> 
>    It's pointless to enclose function call in parens, again.

I'll correct that issue when merging the patch.

-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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