Received: by 2002:a05:6a10:1287:0:0:0:0 with SMTP id d7csp1485195pxv; Fri, 16 Jul 2021 10:20:59 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxGJ1UZFHEIAmTsVvaj44sqhPlByROHvoDVJ8sa4pFxQ+9vXNYmxPzH2PX+oFP1sX4Ec3wb X-Received: by 2002:a17:906:3e8a:: with SMTP id a10mr12825032ejj.479.1626456059299; Fri, 16 Jul 2021 10:20:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1626456059; cv=none; d=google.com; s=arc-20160816; b=UsboyoJJklakAf5sHVpGslUPFGjAOf8QfxKkGDWaQFKVmE3lnIxtoQdaOwkGFyygxy fZuKBxg8UCvxz9bNDoWBG91LvuCgI3DxxfbBM4wCKo+yWZLnSmOd6in22auQ2neEiha3 /leWNWRxrYQWdi7R9S0F0y8i6eJSrZFZtUQSTYHB44lhqP5PGBs7LHY8PY/ok51TPDMf Q9/4uKkjIE3M0Toxdx5g9NnHMglOalmtHno2Elr5Hco553Ri7nWJGNhs+wanaoyPr+yX biBU2JQKoMLMMPLvK/y5s6qd4ht5gmreoamG6NSs87NWTtw+f1cN8WUqcZCxRBnob8jF B9sQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=+YpgeVl8kNOpkcg3zWxfdpfu5sUBR5DtgOZLtCe1KRY=; b=qEfovTfIYSffZa1ve0QwaC/U56OoMpDy3zQ+acIR7dveCdlwcrrdV7+PqJb1CFRRuF xbKyCaEtV5TO0I2YkeXeSeqIDDi/EtG9XBuDBtk/PbenCrqA/i14brIql5My1+zOoII4 eTcIDudfXDX2irkdPs0flcLVNj7cMk1NJ6ia0jLX0faxEuFoLzmyiLEZKq79M2+83D1F BkosWIbjNG+CrT0DwNTSviyJmPrR53syx2NQMR2VaoHUlRql/i94c2ydumFCyQnBFrzn p01zXhojdN4XLNtyfDBMwPbcVluQ8w0LDwSaE6lkZ6RERL4exgx3CZdm6ji0KCUaoLzi CpZg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=QnQ6UbJm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p27si10464296ejn.267.2021.07.16.10.20.35; Fri, 16 Jul 2021 10:20:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=QnQ6UbJm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230270AbhGPRWe (ORCPT + 99 others); Fri, 16 Jul 2021 13:22:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:56096 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229611AbhGPRWd (ORCPT ); Fri, 16 Jul 2021 13:22:33 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 006786115A; Fri, 16 Jul 2021 17:19:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626455978; bh=+YpgeVl8kNOpkcg3zWxfdpfu5sUBR5DtgOZLtCe1KRY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=QnQ6UbJmJg+lt8/7+N7cMghPA4UajH/Vbg3qSays2/rc98e2PQ53Ff1UUI3sBCSGx ADX37Hjr5LAknzQD9O2J1ddhV934Xwce9o6rz68mOTcKM7srohJteB8Tsr22PgLqb6 ZVuUG6ZKBVAODkBTcJJ2nTmMia44dFweeN3vC74VqR/NhVMxyjqZcmYxSwmquE1tva KaPrPJvg8U44Sth/9+209aRaPeUGj/B3KQSjeQrHPeD+hSjJrihunv3d0RzoDEVstU +5E68tKkFGOLIYjzRB8qIFQwzRPUx7wENcuIWDyj4LMFFpJ17QXfEQ8S9vGWDLPZ4l 2K03UEhsITTGA== Date: Fri, 16 Jul 2021 18:19:36 +0100 From: Mark Brown To: Eddie James Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, openbmc@lists.ozlabs.org, joel@jms.id.au Subject: Re: [PATCH 1/2] spi: fsi: Reduce max transfer size to 8 bytes Message-ID: <20210716171936.GB4137@sirena.org.uk> References: <20210716133915.14697-1-eajames@linux.ibm.com> <20210716133915.14697-2-eajames@linux.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="TakKZr9L6Hm6aLOc" Content-Disposition: inline In-Reply-To: <20210716133915.14697-2-eajames@linux.ibm.com> X-Cookie: do { User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --TakKZr9L6Hm6aLOc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Jul 16, 2021 at 08:39:14AM -0500, Eddie James wrote: > Security changes have forced the SPI controllers to be limited to > 8 byte reads. Refactor the sequencing to just handle 8 bytes at a > time. Which security changes where - somewhere else in Linux? --TakKZr9L6Hm6aLOc Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmDxv6cACgkQJNaLcl1U h9CX5gf/ZGL0S2R8LTjv19bHHY3qmjDxNZSgznVmQxQtQuo444TlpJcK/zHW+uDT yFigB3LpxINXizUgBU16bR5P4JnwISufdE/qKxKhKZsbSQnu3PgsKyVuM1Ih3157 Qq6YATY0HF6UtqUa1O/EgnLOKsIZN4DCvg9YWF0Os2moWvol8nEYtPl/n43oDecn KeSSI7np9OEhA7RGRfZLcgMF67OWqune5U0nqLEPln4jiUTibMBci5Pf7f5KO8SO pBDt8HBvL0UJ1AXCMcgeRDjjR/hhYChgurh9alnHc+NtogOeyK4pl/V0j9d+rHs4 LfKsz5VbX+qiaxEnue2Pdu/5hP6fDA== =6cCz -----END PGP SIGNATURE----- --TakKZr9L6Hm6aLOc--