linux-kernel - Re: [PATCH] i2c: core: check returned size of emulated smbus block read

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Message-ID: <20200628182015.GA1274@ninjato>
Date:   Sun, 28 Jun 2020 20:20:15 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Måns Rullgård <mans@...sr.com>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: core: check returned size of emulated smbus block
 read


> I saw it with the mv64xxx (Allwinner) and omap (Beaglebone) drivers.
> From a quick look, it seems like quite a few others have the same
> problem.

Okay, well, to be fair, both drivers don't advertise
I2C_SMBUS_BLOCK_DATA. The client driver should check for that. Anyhow,
it makes sense to have your additional check in the core as fallback
safety.


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