From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA9A3C433EF for ; Fri, 20 May 2022 19:47:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243617AbiETTrI (ORCPT ); Fri, 20 May 2022 15:47:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232868AbiETTrH (ORCPT ); Fri, 20 May 2022 15:47:07 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D1227E1CA; Fri, 20 May 2022 12:47:06 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 0BAB0B82B7D; Fri, 20 May 2022 19:47:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 739B0C385A9; Fri, 20 May 2022 19:47:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653076023; bh=1h3BDBR66ZfNzUY14/QxZgGwkL8f2aEHXApH0sV2FCU=; h=From:To:Cc:Subject:Date:From; b=APkCh74MUVxww7ejm7ll/yzkJYHOlUQJxPa4Mhn3vpcojyw2M09AQPj0Bmq1FH6b/ hIP55T6qG9RN1dalRn7fyNzWnl6JPOt9nYRb+YkyKGF9Fm/Fb6oIrqFjYWl6OkeqR0 6wyzqdULl/+NSnCOMyTDm6kOlQMKRgk0qb0NYf/iHvqeClId4z754feHdy+bfyc51T vAxL/+Z2fWGe/+8tFX6gytEodzfsd1r8rB36D8ArJWz5Cp0r3crYSRKfqq2ldpK7+c iyiPySgT1oU6RbMQmrob+H6fh5T4gK/Q/GPr3bop29EmHOLTetVlQIam+GcX6Swhjk N4oUCREnvBvCg== From: Jakub Kicinski To: mkl@pengutronix.de Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, Jakub Kicinski , wg@grandegger.com, linux-can@vger.kernel.org Subject: [PATCH net-next] can: kvaser_usb: silence a GCC 12 -Warray-bounds warning Date: Fri, 20 May 2022 12:46:59 -0700 Message-Id: <20220520194659.2356903-1-kuba@kernel.org> X-Mailer: git-send-email 2.34.3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org 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). Signed-off-by: Jakub Kicinski --- Hi Marc, are you planning another -next PR? Can we take this directly? CC: wg@grandegger.com CC: mkl@pengutronix.de CC: linux-can@vger.kernel.org --- drivers/net/can/usb/kvaser_usb/Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/can/usb/kvaser_usb/Makefile b/drivers/net/can/usb/kvaser_usb/Makefile index cf260044f0b9..b20d951a0790 100644 --- a/drivers/net/can/usb/kvaser_usb/Makefile +++ b/drivers/net/can/usb/kvaser_usb/Makefile @@ -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 -- 2.34.3