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From: Arnd Bergmann <arnd@kernel.org>
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>
Cc: Arnd Bergmann <arnd@arndb.de>,
	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: fix alignment constraints
Date: Thu,  4 Feb 2021 17:28:35 +0100	[thread overview]
Message-ID: <20210204162852.3219572-1-arnd@kernel.org> (raw)

From: Arnd Bergmann <arnd@arndb.de>

sturct d11txh contains a ieee80211_rts structure, which is required to
have at least two byte alignment, and this conflicts with the __packed
attribute:

drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h:786:1: warning: alignment 1 of 'struct d11txh' is less than 2 [-Wpacked-not-aligned]

Mark d11txh itself as having two-byte alignment to ensure the
inner structure is properly aligned.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h
index 9035cc4d6ff3..7870093629c3 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h
@@ -783,7 +783,7 @@ struct d11txh {
 	u8 RTSPhyHeader[D11_PHY_HDR_LEN];	/* 0x2c - 0x2e */
 	struct ieee80211_rts rts_frame;	/* 0x2f - 0x36 */
 	u16 PAD;		/* 0x37 */
-} __packed;
+} __packed __aligned(2);
 
 #define	D11_TXH_LEN		112	/* bytes */
 
-- 
2.29.2


             reply	other threads:[~2021-02-04 16:30 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-04 16:28 Arnd Bergmann [this message]
2021-02-08 11:03 ` brcmsmac: fix alignment constraints Kalle Valo

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