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 9A9F1C433FE for ; Sun, 23 Jan 2022 00:16:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235608AbiAWAQ0 (ORCPT ); Sat, 22 Jan 2022 19:16:26 -0500 Received: from sin.source.kernel.org ([145.40.73.55]:46796 "EHLO sin.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235612AbiAWAOc (ORCPT ); Sat, 22 Jan 2022 19:14:32 -0500 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 sin.source.kernel.org (Postfix) with ESMTPS id E1E5FCE0AD9; Sun, 23 Jan 2022 00:14:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E3F5C36AE3; Sun, 23 Jan 2022 00:14:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642896869; bh=rm783gSObYHPebqbPrvhoi8P/3GU+Dnf/3HnG1sfW2U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D1g5e08oH8bq02A6Gl0WcV54ghDD3OkNtPGnKZFV34pb/oiGCm17oOzHLSvmz/fdT xSnd0ivkepEwl96LgCE2kNmgzqtNzN4v8S8EAkgkwMhD2nGSKgpVYjguBW1n6yfcrx 8GHiZlszOW1sK5fUNyLZVa0lTvxNvvcmLljk8jk09zpW2fadObxOWx4tLpfz1yrJC0 BmylErvhcOdeHdcHcnGGVymJkUQ9LLZpX7osWPks/z2leb58hIdvrMgx58QH+YAeXu 02+z6f12hsJ03gM5/sT2TzmVaJWRP+Zr9t25678y5EnimdDCLSWUgDjhKfCvROkywK HvqGvWrhFbJYA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Michael Ellerman , Jakub Kicinski , "David S . Miller" , Sasha Levin , tanghui20@huawei.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 2/4] net: apple: bmac: Fix build since dev_addr constification Date: Sat, 22 Jan 2022 19:14:19 -0500 Message-Id: <20220123001423.2461009-2-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220123001423.2461009-1-sashal@kernel.org> References: <20220123001423.2461009-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Michael Ellerman [ Upstream commit ea938248557a52e231a31f338eac4baee36a8626 ] Since commit adeef3e32146 ("net: constify netdev->dev_addr") the bmac driver no longer builds with the following errors (pmac32_defconfig): linux/drivers/net/ethernet/apple/bmac.c: In function ‘bmac_probe’: linux/drivers/net/ethernet/apple/bmac.c:1287:20: error: assignment of read-only location ‘*(dev->dev_addr + (sizetype)j)’ 1287 | dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j]; | ^ Fix it by making the modifications to a local macaddr variable and then passing that to eth_hw_addr_set(). We don't use the existing addr variable because the bitrev8() would mutate it, but it is already used unreversed later in the function. Signed-off-by: Michael Ellerman Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/apple/bmac.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple/bmac.c index ffa7e7e6d18d0..22a5d8bf555b0 100644 --- a/drivers/net/ethernet/apple/bmac.c +++ b/drivers/net/ethernet/apple/bmac.c @@ -1247,6 +1247,7 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match) struct bmac_data *bp; const unsigned char *prop_addr; unsigned char addr[6]; + u8 macaddr[6]; struct net_device *dev; int is_bmac_plus = ((int)match->data) != 0; @@ -1294,7 +1295,9 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match) rev = addr[0] == 0 && addr[1] == 0xA0; for (j = 0; j < 6; ++j) - dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j]; + macaddr[j] = rev ? bitrev8(addr[j]): addr[j]; + + eth_hw_addr_set(dev, macaddr); /* Enable chip without interrupts for now */ bmac_enable_and_reset_chip(dev); -- 2.34.1