From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Subject: Re: [PATCH v3 09/11] i2c: rcar: revoke START request early
Date: Sat, 2 Apr 2016 02:05:40 +0300
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To: Wolfram Sang <wsa@the-dreams.de>
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On 04/01/2016 11:14 PM, Wolfram Sang wrote:
>
>>> IIRC my tests showed that if you don't remove
>>> the spinlocks (patch 4), the interrupt latency will already be too high
>>> again.
>>
>>     Thank you for the valuable info!
>
> Oh, and add patch 6 to it. The context switches are a major problem in
> this.

    Thanks again! I ended up backporting all the patches up to #9. Not sure 
it'd be acceptable for the -stable kernels since there's a lot of refactors 
involved...

MBR, Sergei