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[46.91.237.186]) by smtp.gmail.com with ESMTPSA id c83sm16582066wmd.23.2020.04.27.03.49.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Apr 2020 03:49:41 -0700 (PDT) Date: Mon, 27 Apr 2020 12:49:40 +0200 From: Thierry Reding To: Dmitry Osipenko Cc: Wolfram Sang , Jon Hunter , Laxman Dewangan , Manikanta Maddireddy , Vidya Sagar , linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] i2c: tegra: Better handle case where CPU0 is busy for a long time Message-ID: <20200427104940.GA3464906@ulmo> References: <470b4de4-e98a-1bdc-049e-6259ad603507@nvidia.com> <79f6560e-dbb5-0ae1-49f8-cf1cd95396ec@nvidia.com> <20200427074837.GC3451400@ulmo> <20200427084424.GA28817@kunai> <820200ce-17f3-18c0-6f79-3e582f45492d@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="YZ5djTAD1cGYuMQK" Content-Disposition: inline In-Reply-To: <820200ce-17f3-18c0-6f79-3e582f45492d@gmail.com> User-Agent: Mutt/1.13.1 (2019-12-14) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --YZ5djTAD1cGYuMQK Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Apr 27, 2020 at 12:07:19PM +0300, Dmitry Osipenko wrote: > 27.04.2020 11:44, Wolfram Sang =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > >=20 > >> Wolfram, can you revert the following two patches for v5.7, please? > >> > >> 8814044fe0fa i2c: tegra: Synchronize DMA before termination >=20 > This patch has nothing to do with your trouble, why do you want to > revert it? It was part of the same series and addressing the same "busy CPU" scenario, so I think it makes sense to keep both in the same series. I guess we could try to run some tests with only this applied and see if that really doesn't break anything. If so, I don't have any objection to keeping this. 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