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[2620:137:e000::1:20]) by mx.google.com with ESMTP id t20-20020a170902e1d400b001ae5eb838easi7943530pla.292.2023.06.23.04.04.22; Fri, 23 Jun 2023 04:04:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=boBrJZWq; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 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 S232191AbjFWKdk (ORCPT + 99 others); Fri, 23 Jun 2023 06:33:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232173AbjFWKdj (ORCPT ); Fri, 23 Jun 2023 06:33:39 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5FCCEE6E; Fri, 23 Jun 2023 03:33:38 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (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 dfw.source.kernel.org (Postfix) with ESMTPS id E9FF361A11; Fri, 23 Jun 2023 10:33:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7137C433C0; Fri, 23 Jun 2023 10:33:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1687516417; bh=sfFnaH25gpS9v0cJjOQk7EIROwbjYpko9ASJcwzrEhc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=boBrJZWqR4cqNFXYKB2+LifLXTAABU48JqZrimo5aUe/KEwbyVHQnSQXUP7jjTern u29kc/41kLgjFEy588K6k+AZT5Ax0wr5Sgx78rKzankDx2K9Nm8c4WUMZtuFhPIHS3 FJb9oq4/syOf70YWA45zzw0ywf/tL+rdaKpSfhkyJWj5Chr2JnGHlZLQGJX9g6Yc/7 JrQLLTKx5xmSMNPHX54v4aGT/U1WlBUwaqP71+Ip7IJnYCRirjR77jJEIp1nLQRUyv QENo56jbyb5xqRbmIZkCFUw01WnipGREXGrtEi4m/8UNtx1bcV6KFaNeC/FzziA2vK 9gZTnMygAkVhw== Date: Fri, 23 Jun 2023 12:33:33 +0200 From: Wolfram Sang To: Sean Nyekjaer Cc: Pierre-Yves MORDRET , Alain Volmat , Maxime Coquelin , Alexandre Torgue , linux-i2c@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: stm32f7: Add atomic_xfer method to driver Message-ID: Mail-Followup-To: Wolfram Sang , Sean Nyekjaer , Pierre-Yves MORDRET , Alain Volmat , Maxime Coquelin , Alexandre Torgue , linux-i2c@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20230509132159.4160984-1-sean@geanix.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="uknG7jZmb7sNlYPD" Content-Disposition: inline In-Reply-To: <20230509132159.4160984-1-sean@geanix.com> X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --uknG7jZmb7sNlYPD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 09, 2023 at 03:21:59PM +0200, Sean Nyekjaer wrote: > Add an atomic_xfer method to the driver so that it behaves correctly > when controlling a PMIC that is responsible for device shutdown. >=20 > The atomic_xfer method added is similar to the one from the i2c-mv64xxx > driver. When running an atomic_xfer a bool flag in the driver data is > set, the interrupt is not unmasked on transfer start, and the IRQ > handler is manually invoked while waiting for pending transfers to > complete. >=20 > Signed-off-by: Sean Nyekjaer Pierre-Yves, Alain, any further comments to this patch? > Is it okay to keep the DMA transfer in atomic? Will DMA actually run in atomic mode? --uknG7jZmb7sNlYPD Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmSVdPkACgkQFA3kzBSg KbbxjQ/+K79nV1aTGPrTZkz9DkQ84yocXtzQ/Qw8yJMmWIe7Ld2ELs8iW0iVABTR lhD9nUCcVe4pT8h+lXoxJPEg8AsDD3dM6nLWTd95SIXk+wK2k68QMYCnH9Ej/lDW syrfeqqV3pW3rfCAdPQHPB/BDeAwqkOZ6KU8d8Ulkc6za4KFBB6UueOO0WOvcm4a wTwEM0jJuEijsOPcv3xR0YtDQ1wG6hlEo8xQoRv2dF8mSVvhLFBOZVjVmdCXP20K 70ctiTHnht1Eqbxue8XvgGhJ07WPxmIG840vEpEcEkdfjYtE/v/4Ivo2T1fd6bLy mJheZ0gAJxZ6Ze0D93JHCDawP7i1DsOcxld4+KgnTBKRiMtpAlbsa+AbHTkX2tM/ DM0zcoprB3V0BPOx3cgfa9Yf87BsMvFxhG5OIPEiJJNEtReiA0rG6iopE1PMB9xY smdddrd0KvMYS60Xql14vje2AbgP7SzDwxrMLOLemFqhs85pydtwRMFFl8sW9Lm0 1XHMKyE6OkmS+hR+rK8NVRPuZ8kSTvzVXxa5pcGNvlyfY0LtbWaIln24HOfKeo2Q wfOEDSKPFxJuroFXm8Dzt2w919cw+GipDEhxVteUDkauuc2yveqjmKOJOJJ4K9h0 EmdrZbmNefnsLyLaReTG46cViZ+4OwVL5yutM/ow8m+FYitRS4o= =JfaG -----END PGP SIGNATURE----- --uknG7jZmb7sNlYPD--