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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B47BC468BD for ; Sat, 8 Jun 2019 11:50:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 681AA21537 for ; Sat, 8 Jun 2019 11:50:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994607; bh=3QfMeYH1RITNUgDFV5fp/0BXgtbC4vkeWaZuv/cNtxI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KKTMjQEfYALC+N68syjEGztAQpEks2Ky1dMJoGY5V4WIbfULZteqEWsyfJYoZZNt6 mkSSLu2bEpZVpQxwkOlq0TZMX0AjQuihyugeAFrBZpuWP9hxjTHn2GWmQjtwcgN4Q5 DpQFFHia+f0ZP0NV59XZLLUsd9ILukrYKuu0wZIQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728361AbfFHLuD (ORCPT ); Sat, 8 Jun 2019 07:50:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:37510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728349AbfFHLsp (ORCPT ); Sat, 8 Jun 2019 07:48:45 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2E4ED216FD; Sat, 8 Jun 2019 11:48:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559994525; bh=3QfMeYH1RITNUgDFV5fp/0BXgtbC4vkeWaZuv/cNtxI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n5rcbt/R1spVw9szr+UGLuT/o/pCOOMFcBnzGN4wingqV28F+qwb+Lb1N0ckmVVY9 mmMGiRdJ93t9SA+kgBebUh9rW95NqhUeT70bYIIKg+sqefZ3For+CdrUeSpe5laVa9 lxCLcI6HHIA3aGEG3o4fwjcjnmVHY162a4j0B+GU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Amit Cohen , Jiri Pirko , Ido Schimmel , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 20/20] mlxsw: spectrum: Prevent force of 56G Date: Sat, 8 Jun 2019 07:47:56 -0400 Message-Id: <20190608114756.9742-20-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190608114756.9742-1-sashal@kernel.org> References: <20190608114756.9742-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Amit Cohen [ Upstream commit 275e928f19117d22f6d26dee94548baf4041b773 ] Force of 56G is not supported by hardware in Ethernet devices. This configuration fails with a bad parameter error from firmware. Add check of this case. Instead of trying to set 56G with autoneg off, return a meaningful error. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Amit Cohen Acked-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index e3ed70a24029..585a40cc6470 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2044,6 +2044,10 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev, mlxsw_reg_ptys_unpack(ptys_pl, ð_proto_cap, NULL, NULL); autoneg = cmd->base.autoneg == AUTONEG_ENABLE; + if (!autoneg && cmd->base.speed == SPEED_56000) { + netdev_err(dev, "56G not supported with autoneg off\n"); + return -EINVAL; + } eth_proto_new = autoneg ? mlxsw_sp_to_ptys_advert_link(cmd) : mlxsw_sp_to_ptys_speed(cmd->base.speed); -- 2.20.1