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 C2384C636CC for ; Tue, 7 Feb 2023 13:53:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230234AbjBGNxB (ORCPT ); Tue, 7 Feb 2023 08:53:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230207AbjBGNxB (ORCPT ); Tue, 7 Feb 2023 08:53:01 -0500 Received: from mail.3ffe.de (0001.3ffe.de [IPv6:2a01:4f8:c0c:9d57::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72D35F4; Tue, 7 Feb 2023 05:53:00 -0800 (PST) Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.3ffe.de (Postfix) with ESMTPSA id DC32B87; Tue, 7 Feb 2023 14:52:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2022082101; t=1675777979; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3WxcfI63mtIII59k4Jv/2QN4RreNK4p1T15pIT1Atjw=; b=tM0TuD2IQIBkvLNeFLTsFZoxK6Qs4r1/X3EcW8ciUVQyTNgVRb6i1aeh38dTOVULGdiMEp srUaINfujjIJwzcHCYRf0NLyDIsjCcGWsZ/SNih4fvMF7/bBQhO7n3MqgK2/w4ghbFWaWk QASnu59Yx4o6hlzvZFBXnJjdu9bBQVqGJeEg+kn2Hj4mPxyvS4Sra+gjh3E8QULcnMTTkx bQxHs33Cp3dWKIER+rlrGdHSpogO0HBicW471t+FdMLj/HhRPuQB0g8GB5K3/2m5NTekoz eY+L8VgT1qD317V3vHFIJfs3F+R6l0mkx8Lqu4uhqqbyFQ1jGTnK5mmR49839w== From: Michael Walle To: mauro.lima@eclypsium.com Cc: broonie@kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, mika.westerberg@linux.intel.com, Michael Walle Subject: Re: [PATCH 1/1] spi: intel: Remove DANGEROUS tag from pci driver Date: Tue, 7 Feb 2023 14:52:54 +0100 Message-Id: <20230207135254.2465816-1-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230206183143.75274-2-mauro.lima@eclypsium.com> References: <20230206183143.75274-2-mauro.lima@eclypsium.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org > Modern CPUs exposes this controller as PCI device that only uses > hardware sequencing capabilities which is safer than software > sequencing. > Leave the platform driver as *DANGEROUS* and update help text since > most of these controllers are using software sequencing. Out of curiosity, what is hardware sequencing? Maybe this should be explained a bit more in the Kconfig help text. Looks like the dangerous was there because you can update the bios and that could eventually lead to a bricked mainboard. So hardware sequencing helps there? how? -michael