[PATCH 4.9 21/47] soc/fsl: qbman: fix conflicting alignment attributes - Greg Kroah-Hartman

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.9 21/47] soc/fsl: qbman: fix conflicting alignment attributes
Date: Thu, 15 Apr 2021 16:47:13 +0200	[thread overview]
Message-ID: <20210415144414.138078411@linuxfoundation.org> (raw)
In-Reply-To: <20210415144413.487943796@linuxfoundation.org>

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 040f31196e8b2609613f399793b9225271b79471 ]

When building with W=1, gcc points out that the __packed attribute
on struct qm_eqcr_entry conflicts with the 8-byte alignment
attribute on struct qm_fd inside it:

drivers/soc/fsl/qbman/qman.c:189:1: error: alignment 1 of 'struct qm_eqcr_entry' is less than 8 [-Werror=packed-not-aligned]

I assume that the alignment attribute is the correct one, and
that qm_eqcr_entry cannot actually be unaligned in memory,
so add the same alignment on the outer struct.

Fixes: c535e923bb97 ("soc/fsl: Introduce DPAA 1.x QMan device driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210323131530.2619900-1-arnd@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/soc/fsl/qbman/qman.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c
index 91f5c951850f..44463afb8015 100644
--- a/drivers/soc/fsl/qbman/qman.c
+++ b/drivers/soc/fsl/qbman/qman.c
@@ -146,7 +146,7 @@ struct qm_eqcr_entry {
 	u32 tag;
 	struct qm_fd fd;
 	u8 __reserved3[32];
-} __packed;
+} __packed __aligned(8);
 #define QM_EQCR_VERB_VBIT		0x80
 #define QM_EQCR_VERB_CMD_MASK		0x61	/* but only one value; */
 #define QM_EQCR_VERB_CMD_ENQUEUE	0x01
-- 
2.30.2



