linux-kernel - Re: [PATCH] net: mctp-i2c: fix duplicate reception of old data

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Message-ID: <ea3db627f1d7fb4afb1d7b36253ff369341fbad3.camel@codeconstruct.com.au>
Date: Fri, 09 Jan 2026 08:07:19 +0800
From: Jeremy Kerr <jk@...econstruct.com.au>
To: Jian Zhang <zhangjian.3032@...edance.com>, Matt Johnston
 <matt@...econstruct.com.au>, Andrew Lunn <andrew+netdev@...n.ch>, "David S.
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>,  Paolo Abeni <pabeni@...hat.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: mctp-i2c: fix duplicate reception of old data

Hi Jian,

> The MCTP I2C slave callback did not handle I2C_SLAVE_READ_REQUESTED
> events. As a result, i2c read event will trigger repeated reception
> of old data, reset rx_pos when a read request is received.

Makes sense. You're just invoking any i2c read from the peer controller
to trigger this, is that right?

Cheers,

Jeremy