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From:   =?UTF-8?q?=C3=8D=C3=B1igo=20Huguet?= <ihuguet@redhat.com>
To:     Arend van Spriel <aspriel@gmail.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Chi-hsien Lin <chi-hsien.lin@infineon.com>,
        Wright Feng <wright.feng@infineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@infineon.com>,
        Kalle Valo <kvalo@codeaurora.org>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        SHA-cyfmac-dev-list@infineon.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] BRCM80211: improve readability on addresses copy
Date:   Tue, 11 May 2021 09:02:58 +0200
Message-Id: <20210511070257.7843-1-ihuguet@redhat.com>
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Precedence: bulk

A static analyzer identified as a potential bug the copy of
12 bytes from a 6 bytes array to a 6 bytes array. Both
arrays are 6 bytes addresses.

Although not being a real bug, it is not immediately clear
why is done this way: next 6 bytes address, contiguous to
the first one, must also be copied to next contiguous 6 bytes
address of the destination.

Copying each one separately will make both static analyzers
and reviewers happier.

Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
index 763e0ec583d7..26de1bd7fee9 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
@@ -6607,7 +6607,8 @@ brcms_c_d11hdrs_mac80211(struct brcms_c_info *wlc, struct ieee80211_hw *hw,
 			rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 							 IEEE80211_STYPE_RTS);
 
-			memcpy(&rts->ra, &h->addr1, 2 * ETH_ALEN);
+			memcpy(&rts->ra, &h->addr1, ETH_ALEN);
+			memcpy(&rts->ta, &h->addr2, ETH_ALEN);
 		}
 
 		/* mainrate
-- 
2.31.1