Re: [REGRESSION 3.11-rc] wm8775 9-001b: I2C: cannot write ??? to register R??

Knut Petersen
2013-08-28T05:35:01Z

On 27.08.2013 11:51, Hans Verkuil wrote:
> On 08/27/2013 11:35 AM, Knut Petersen wrote:
>> On 27.08.2013 09:26, Hans Verkuil wrote:
>>> On 08/25/2013 05:45 PM, Knut Petersen wrote:
>>>> Booting current git kernel dmesg shows a set of new warnings:
>>>>
>>>> "wm8775 9-001b: I2C: cannot write ??? to register R??"
>>>>
>>>> Nevertheless, the hardware seems to work fine.
>>>>
>>>> This is a new problem, introduced after kernel 3.10.
>>>> If necessary I can bisect.
>>> Can you try this patch? I'm pretty sure this will fix it.
>> Indeed, it does cure the problem. Thanks.
>>
>> Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
> Thanks for testing this! I've posted the pull request for this.
> Hopefully it will make 3.11 before it is released.

As I wrote in the initial bug report, the problem has been introduced _after_ kernel 3.10,
facd23664f1d63c33fbc6da52261c8548ed3fbd4 is _not_ part of kernel 3.10.x

Therefore the CC to stable@vger.kernel.org for v3.10 in
b9a1dfd3ba3ae00b0c1d1a396ed43fac85a32990 is wrong.

cu,
Knut
> Regards,
>
> Hans
>
>