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Date:   Tue, 5 May 2020 01:51:19 +0000
From:   Ryan Chen <>
To:     Wolfram Sang <>
CC:     Brendan Higgins <>,
        Benjamin Herrenschmidt <>,
        Joel Stanley <>,
        Andrew Jeffery <>,
        "" <>,
        "" <>,
        "" <>,
        "" <>
Subject: RE: [PATCH v0 linux master] i2c/busses: Avoid i2c interrupt status
 clear race condition.

> In AST2600 there have a slow peripheral bus between CPU  and i2c 
> controller.
> Therefore GIC i2c interrupt status clear have delay timing, when CPU 
> issue write clear i2c controller interrupt status.
> To avoid this issue, the driver need have read after write  clear at 
> i2c ISR.
> Signed-off-by: ryan_chen <>

>Applied to for-current with a Fixes tag, thanks! Please, try to add one next time and please also check how the subsystem formats the $subject line.
[Ryan Chen] Thanks your review, will add fixes tag at subject. 

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