Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37;
Date:   Sat, 9 Dec 2023 21:28:10 +0100
From:   Andi Shyti <andi.shyti@kernel.org>
To:     Quan Nguyen <quan@os.amperecomputing.com>
Cc:     Brendan Higgins <brendan.higgins@linux.dev>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Joel Stanley <joel@jms.id.au>,
        Andrew Jeffery <andrew@codeconstruct.com.au>,
        Wolfram Sang <wsa@kernel.org>,
        Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>,
        Guenter Roeck <linux@roeck-us.net>, linux-i2c@vger.kernel.org,
        openbmc@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        Cosmo Chou <chou.cosmo@gmail.com>,
        Open Source Submission <patches@amperecomputing.com>,
        Phong Vo <phong@os.amperecomputing.com>,
        "Thang Q . Nguyen" <thang@os.amperecomputing.com>
Subject: Re: [PATCH v3 1/2] i2c: aspeed: Handle the coalesced stop conditions
 with the start conditions.
Message-ID: <20231209202810.r7kkz2hlaonyibha@zenone.zhora.eu>
References: <20231208033142.1673232-1-quan@os.amperecomputing.com>
 <20231208033142.1673232-2-quan@os.amperecomputing.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20231208033142.1673232-2-quan@os.amperecomputing.com>
Precedence: bulk

Hi Quan,

On Fri, Dec 08, 2023 at 10:31:41AM +0700, Quan Nguyen wrote:
> Some masters may drive the transfers with low enough latency between
> the nak/stop phase of the current command and the start/address phase
> of the following command that the interrupts are coalesced by the
> time we process them.
> Handle the stop conditions before processing SLAVE_MATCH to fix the
> complaints that sometimes occur below.
> 
> "aspeed-i2c-bus 1e78a040.i2c-bus: irq handled != irq. Expected
> 0x00000086, but was 0x00000084"
> 
> Fixes: f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed I2C driver")
> Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>

Reviewed-by: Andi Shyti <andi.shyti@kernel.org>

Thanks,
Andi