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can: kvaser_usb: silence a GCC 12 -Warray-bounds warning

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This driver does a lot of casting of smaller buffers to
struct kvaser_cmd_ext, GCC 12 does not like that:

| drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c:489:65: warning: array subscript ‘struct kvaser_cmd_ext[0]’ is partly outside array bounds of ‘unsigned char[32]’ [-Warray-bounds]
| drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c:489:23: note: in expansion of macro ‘le16_to_cpu’
|   489 |                 ret = le16_to_cpu(((struct kvaser_cmd_ext *)cmd)->len);
|       |                       ^~~~~~~~~~~

Temporarily silence this warning (move it to W=1 builds).

Link: https://lore.kernel.org/all/20220520194659.2356903-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Jakub Kicinski 2022-05-20 12:46:59 -07:00 committed by Marc Kleine-Budde
parent a682d18433
commit 3e88445a3a
1 changed files with 5 additions and 0 deletions
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5
drivers/net/can/usb/kvaser_usb/Makefile
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@ -1,3 +1,8 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_CAN_KVASER_USB) += kvaser_usb.o
kvaser_usb-y = kvaser_usb_core.o kvaser_usb_leaf.o kvaser_usb_hydra.o
# FIXME: temporarily silence -Warray-bounds on non W=1+ builds
ifndef KBUILD_EXTRA_WARN
CFLAGS_kvaser_usb_hydra.o += -Wno-array-bounds
endif