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

From: Knut Petersen
Date: Wed Aug 28 2013 - 01:35:09 EST


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@xxxxxxxxxxx>
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@xxxxxxxxxxxxxxx for v3.10 in
b9a1dfd3ba3ae00b0c1d1a396ed43fac85a32990 is wrong.

cu,
Knut
Regards,

Hans



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