linux-kernel - Re: [PATCH v6 2/5] i2c: i2c-mlxbf.c: support lock mechanism

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Message-ID: <YzNR7Go3EsOZY5t+@shikoro>
Date:   Tue, 27 Sep 2022 21:41:32 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     Asmaa Mnebhi <asmaa@...dia.com>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        Khalil Blaiech <kblaiech@...dia.com>
Subject: Re: [PATCH v6 2/5] i2c: i2c-mlxbf.c: support lock mechanism

On Mon, Sep 26, 2022 at 03:45:04PM -0400, Asmaa Mnebhi wrote:
> Linux is not the only entity using the BlueField I2C busses so
> support a lock mechanism provided by hardware to avoid issues
> when multiple entities are trying to access the same bus.
> 
> The lock is acquired whenever written explicitely or the lock
> register is read. So make sure it is always released at the end
> of a successful or failed transaction.
> 
> Fixes: b5b5b32081cd206b (i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC)
> Reviewed-by: Khalil Blaiech <kblaiech@...dia.com>
> Signed-off-by: Asmaa Mnebhi <asmaa@...dia.com>

Applied to for-next, thanks!


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