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Mon, 12 Oct 2020 02:07:50 -0700 (PDT) Date: Mon, 12 Oct 2020 12:07:53 +0300 From: Cristian Ciocaltea To: Manivannan Sadhasivam Subject: Re: [PATCH 2/3] i2c: owl: Add support for atomic transfers Message-ID: <20201012090753.GB73734@ubuntu2004> References: <1af37112fafd6cf069dfe864560f77996f57d80d.1602190168.git.cristian.ciocaltea@gmail.com> <20201011140920.GB4971@Mani-XPS-13-9360> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201011140920.GB4971@Mani-XPS-13-9360> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201012_050752_013575_6639C28D X-CRM114-Status: GOOD ( 15.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-actions@lists.infradead.org, linux-kernel@vger.kernel.org, Peter Rosin , Wolfram Sang , linux-i2c@vger.kernel.org, Andreas =?iso-8859-1?Q?F=E4rber?= , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, Oct 11, 2020 at 07:39:20PM +0530, Manivannan Sadhasivam wrote: > On Fri, Oct 09, 2020 at 12:44:40AM +0300, Cristian Ciocaltea wrote: > > Atomic transfers are required to properly power off a machine through > > an I2C controlled PMIC, such as the Actions Semi ATC260x series. > > > > System shutdown may happen with interrupts being disabled and, as a > > consequence, the kernel may hang if the driver does not support atomic > > transfers. > > > > This functionality is essentially implemented by polling the FIFO > > Status register until either Command Execute Completed or NACK Error > > bits are set. > > > > Signed-off-by: Cristian Ciocaltea > > Reviewed-by: Manivannan Sadhasivam > > Thanks, > Mani Thanks for reviewing, Cristi _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel