netdev - [PATCH net-next] eth: ice: silence the GCC 12 array-bounds warning

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Message-Id: <20220520060906.2311308-1-kuba@kernel.org>
Date:   Thu, 19 May 2022 23:09:06 -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>, jesse.brandeburg@...el.com,
        anthony.l.nguyen@...el.com
Subject: [PATCH net-next] eth: ice: silence the GCC 12 array-bounds warning

GCC 12 gets upset because driver allocates partial
struct ice_aqc_sw_rules_elem buffers. 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: jesse.brandeburg@...el.com
CC: anthony.l.nguyen@...el.com
---
 drivers/net/ethernet/intel/ice/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
index 9183d480b70b..588b6e8c7920 100644
--- a/drivers/net/ethernet/intel/ice/Makefile
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -47,3 +47,8 @@ ice-$(CONFIG_DCB) += ice_dcb.o ice_dcb_nl.o ice_dcb_lib.o
 ice-$(CONFIG_RFS_ACCEL) += ice_arfs.o
 ice-$(CONFIG_XDP_SOCKETS) += ice_xsk.o
 ice-$(CONFIG_ICE_SWITCHDEV) += ice_eswitch.o
+
+# FIXME: temporarily silence -Warray-bounds on non W=1 builds
+ifndef KBUILD_EXTRA_WARN
+CFLAGS_ice_switch.o += $(call cc-disable-warning, array-bounds)
+endif
-- 
2.34.3