linux-kernel - Re: [PATCH] i2c: brcmstb: Add support for atomic transfers

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Message-ID: <ZSa10t1kdUBfiVhR@ninjato>
Date:   Wed, 11 Oct 2023 16:48:50 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Gregor Riepl <onitake@...il.com>, linux-i2c@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Kamal Dasu <kamal.dasu@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        Florian Fainelli <florian.fainelli@...adcom.com>
Subject: Re: [PATCH] i2c: brcmstb: Add support for atomic transfers


> I guess that i2c core takes care of NOT multiplexing atomic and standard 
> i2c transfers.

Atomic transfers are only used iff the system is in a certain state,
check i2c_in_atomic_xfer_mode(). Then and only then, transfers are
atomic. All of them. Neither bus drivers nor clients can choose them.


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