linux-kernel - Re: [PATCH v2] i2c: designware: Introduce semaphore reservation timer to AMDPSP driver

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Date:   Sat, 20 Aug 2022 08:30:01 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Jan Dabros <jsd@...ihalf.com>
Cc:     linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        jarkko.nikula@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        mika.westerberg@...ux.intel.com, rrangel@...omium.org,
        mw@...ihalf.com, upstream@...ihalf.com
Subject: Re: [PATCH v2] i2c: designware: Introduce semaphore reservation
 timer to AMDPSP driver

On Fri, Aug 12, 2022 at 09:15:26AM +0200, Jan Dabros wrote:
> In order to optimize performance, limit amount of back and forth
> transactions between x86 and PSP. This is done by introduction of
> semaphore reservation period - that is window in which x86 isn't
> releasing the bus immediately after each I2C transaction.
> 
> In order to protect PSP from being starved while waiting for
> arbitration, after a programmed time bus is automatically released by a
> deferred function.
> 
> Signed-off-by: Jan Dabros <jsd@...ihalf.com>

Fixed this checkpatch check:

CHECK: Blank lines aren't necessary after an open brace '{'
#60: FILE: drivers/i2c/busses/i2c-designware-amdpsp.c:265:

and applied to for-next, thanks!


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