netdev - [PATCH net-next v2 1/3] eth: mtk_eth_soc: silence the GCC 12 array-bounds warning

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Message-Id: <20220520195605.2358489-2-kuba@kernel.org>
Date:   Fri, 20 May 2022 12:56:03 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
        Jakub Kicinski <kuba@...nel.org>, nbd@....name,
        john@...ozen.org, sean.wang@...iatek.com, Mark-MC.Lee@...iatek.com,
        matthias.bgg@...il.com
Subject: [PATCH net-next v2 1/3] eth: mtk_eth_soc: silence the GCC 12 array-bounds warning

GCC 12 gets upset because in mtk_foe_entry_commit_subflow()
this driver allocates a partial structure. The writes are
within bounds.

Silence these warnings for now, our build bot runs GCC 12
so we won't allow any new instances.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: nbd@....name
CC: john@...ozen.org
CC: sean.wang@...iatek.com
CC: Mark-MC.Lee@...iatek.com
CC: matthias.bgg@...il.com
---
 drivers/net/ethernet/mediatek/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/Makefile b/drivers/net/ethernet/mediatek/Makefile
index 45ba0970504a..fe66ba8793cf 100644
--- a/drivers/net/ethernet/mediatek/Makefile
+++ b/drivers/net/ethernet/mediatek/Makefile
@@ -11,3 +11,8 @@ mtk_eth-$(CONFIG_NET_MEDIATEK_SOC_WED) += mtk_wed_debugfs.o
 endif
 obj-$(CONFIG_NET_MEDIATEK_SOC_WED) += mtk_wed_ops.o
 obj-$(CONFIG_NET_MEDIATEK_STAR_EMAC) += mtk_star_emac.o
+
+# FIXME: temporarily silence -Warray-bounds on non W=1+ builds
+ifndef KBUILD_EXTRA_WARN
+CFLAGS_mtk_ppe.o += -Wno-array-bounds
+endif
-- 
2.34.3