linux-kernel - Re: [PATCH v2 RESEND] i2c: tegra: check msg length in SMBUS block read

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Message-ID: <aBBmmNlM3_zjNMC3@shikoro>
Date: Tue, 29 Apr 2025 07:41:44 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Akhil R <akhilrajeev@...dia.com>
Cc: Andi Shyti <andi.shyti@...nel.org>,
	Laxman Dewangan <ldewangan@...dia.com>,
	"digetx@...il.com" <digetx@...il.com>,
	"thierry.reding@...il.com" <thierry.reding@...il.com>,
	Jon Hunter <jonathanh@...dia.com>,
	"wsa@...nel.org" <wsa@...nel.org>,
	"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Thierry Reding <treding@...dia.com>
Subject: Re: [PATCH v2 RESEND] i2c: tegra: check msg length in SMBUS block
 read

Hi Akhil,

> Yes. We have had issues where the client device sends '0' as length if the

Can you reveal which client that is?

> transfer is terminated abruptly at the client's side. The actual fix is in the client's
> driver, but this check here would ensure that the master does not run into
> trouble either.

Correct.

Happy hacking!

   Wolfram


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