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

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Date:	Tue, 27 Aug 2013 11:51:19 +0200
From:	Hans Verkuil <hansverk@...co.com>
To:	Knut Petersen <Knut_Petersen@...nline.de>
CC:	Mauro Carvalho Chehab <mchehab@...radead.org>,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [REGRESSION 3.11-rc] wm8775 9-001b: I2C: cannot write ??? to
 register R??

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@...nline.de>

Thanks for testing this! I've posted the pull request for this.
Hopefully it will make 3.11 before it is released.

Regards,

	Hans

> 
> 
>>
>> Regards,
>>
>>     Hans
>>
>> diff --git a/drivers/media/pci/cx88/cx88.h b/drivers/media/pci/cx88/cx88.h
>> index afe0eae..28893a6 100644
>> --- a/drivers/media/pci/cx88/cx88.h
>> +++ b/drivers/media/pci/cx88/cx88.h
>> @@ -259,7 +259,7 @@ struct cx88_input {
>>   };
>>     enum cx88_audio_chip {
>> -    CX88_AUDIO_WM8775,
>> +    CX88_AUDIO_WM8775 = 1,
>>       CX88_AUDIO_TVAUDIO,
>>   };
>>  
>>
> 

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