From: Arnd Bergmann <arnd@kernel.org>
To: Lennert Buytenhek <buytenh@wantstofly.org>,
Kalle Valo <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Romain Perier <romain.perier@gmail.com>,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
Allen Pais <allen.lkml@gmail.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] cwmwl8k: fix alignment constraints
Date: Thu, 4 Feb 2021 17:28:04 +0100 [thread overview]
Message-ID: <20210204162813.3159319-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
sturct mwl8k_dma_data contains a ieee80211_hdr structure, which is required to
have at least two byte alignment, and this conflicts with the __packed
attribute:
vers/net/wireless/marvell/mwl8k.c:811:1: warning: alignment 1 of 'struct mwl8k_dma_data' is less than 2 [-Wpacked-not-aligned]
Mark mwl8k_dma_data 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/marvell/mwl8k.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/marvell/mwl8k.c b/drivers/net/wireless/marvell/mwl8k.c
index abf3b0233ccc..38eeab6369f7 100644
--- a/drivers/net/wireless/marvell/mwl8k.c
+++ b/drivers/net/wireless/marvell/mwl8k.c
@@ -808,7 +808,7 @@ struct mwl8k_dma_data {
__le16 fwlen;
struct ieee80211_hdr wh;
char data[];
-} __packed;
+} __packed __aligned(2);
/* Routines to add/remove DMA header from skb. */
static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
--
2.29.2
next 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 11:23 ` mwl8k: fix alignment constraints Kalle Valo
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