linux-kernel - Re: [PATCH v4 1/2] i2c: designware: Add missing locks

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Message-ID: <9816b101-6252-5792-65bd-3cab6fa496c4@linux.intel.com>
Date:   Wed, 9 Feb 2022 17:01:21 +0200
From:   Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To:     Jan Dabros <jsd@...ihalf.com>, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org, andriy.shevchenko@...ux.intel.com
Cc:     mika.westerberg@...ux.intel.com, hdegoede@...hat.com,
        wsa@...nel.org, rrangel@...omium.org, mw@...ihalf.com,
        jaz@...ihalf.com, upstream@...ihalf.com, thomas.lendacky@....com,
        alexander.deucher@....com, Nimesh.Easow@....com,
        mario.limonciello@....com
Subject: Re: [PATCH v4 1/2] i2c: designware: Add missing locks

On 2/8/22 16:12, Jan Dabros wrote:
> All accesses to controller's registers should be protected on
> probe, disable and xfer paths. This is needed for i2c bus controllers
> that are shared with but not controller by kernel.
> 
> Signed-off-by: Jan Dabros <jsd@...ihalf.com>
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>
> ---
>   drivers/i2c/busses/i2c-designware-common.c | 12 ++++++++++++
>   drivers/i2c/busses/i2c-designware-master.c |  6 ++++++
>   2 files changed, 18 insertions(+)
> 
Acked-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>

Shortly tested by rmmod & modprobe loop.

Tested-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>