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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 AEE1AC18E5B for ; Mon, 16 Mar 2020 11:51:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 781C1205ED for ; Mon, 16 Mar 2020 11:51:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584359461; bh=l6F1XWmO/Be0QKahuz5D5djcbaOCPXDU2fWatSvvxdk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=v+Hkhw3sJyXVxJHsh1N8wnF14c1pU0aj7qwJHGhMZq9FQ08Ky6a7BjGhyjcUKm4i+ sQPZxfRNiuVeywzh7bSRg9iqNwozePrrT7/EtNPnlyGUo8axjH8QC8ECbdgymWImBz 6KXQZjD1Pj0jQ6jAtA9CjpJ/slWFmT+IkpZpzLOA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730912AbgCPLvA (ORCPT ); Mon, 16 Mar 2020 07:51:00 -0400 Received: from foss.arm.com ([217.140.110.172]:46802 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730882AbgCPLvA (ORCPT ); Mon, 16 Mar 2020 07:51:00 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DD1D330E; Mon, 16 Mar 2020 04:50:59 -0700 (PDT) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5FF693F52E; Mon, 16 Mar 2020 04:50:59 -0700 (PDT) Date: Mon, 16 Mar 2020 11:50:57 +0000 From: Mark Brown To: Sasha Levin Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Vignesh Raghavendra , linux-spi@vger.kernel.org Subject: Re: [PATCH AUTOSEL 5.5 01/41] spi: spi-omap2-mcspi: Handle DMA size restriction on AM65x Message-ID: <20200316115057.GB5010@sirena.org.uk> References: <20200316023319.749-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="mxv5cy4qt+RJ9ypb" Content-Disposition: inline In-Reply-To: <20200316023319.749-1-sashal@kernel.org> X-Cookie: I thought YOU silenced the guard! User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --mxv5cy4qt+RJ9ypb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Mar 15, 2020 at 10:32:39PM -0400, Sasha Levin wrote: > From: Vignesh Raghavendra >=20 > [ Upstream commit e4e8276a4f652be2c7bb783a0155d4adb85f5d7d ] >=20 > On AM654, McSPI can only support 4K - 1 bytes per transfer when DMA is > enabled. Therefore populate master->max_transfer_size callback to > inform client drivers of this restriction when DMA channels are > available. As ever this only provides information to other drivers which may be buggy. --mxv5cy4qt+RJ9ypb Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl5vaCEACgkQJNaLcl1U h9Dyuwf/fRi4iGdV1A9vW0+wTm8Pznka9n9+PoM5TuqyP0qrul8iIK7h/H6xS7bF wRQVfQDzo/SfuONZlUUZOvtQXevqHPOtFl2x3Qe1sVnE39byJc6qu/EDsrNYVLgg DLzo+493Fh+HQgfAb+b80kh9XbZ4rN0qSsyPpt7Ygqj8EpG/so3qCir1BtkKBYAx nVN/HglbGLu0VosqwfRzpUSgPp0mQlVVhrBX3eyL62c3GQ3+R2Fk9namhq4GYNDv rcKj4Fi/WhkKOIzmjwPtep6I4uY5ZnM6XVFxa1KuM2p7NVMWlvSZhdn2wvWR0kOr +dB4D+JEBdndXoBkq3Ywisrppx4JNQ== =73L/ -----END PGP SIGNATURE----- --mxv5cy4qt+RJ9ypb--