Re: [PATCH] [RFC] media: camss-vfe: always initialize reg at vfe_set_xbar_cfg()

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On  1.11.2017 15:25, Mauro Carvalho Chehab wrote:
> Em Wed, 1 Nov 2017 15:09:36 +0200
> Todor Tomov <todor.tomov@xxxxxxxxxx> escreveu:
> 
>> On  1.11.2017 15:03, Mauro Carvalho Chehab wrote:
>>> Hi Todor,
>>>
>>> Em Wed, 1 Nov 2017 14:38:02 +0200
>>> Todor Tomov <todor.tomov@xxxxxxxxxx> escreveu:
>>>   
>>>> Hi Mauro,
>>>>
>>>> Thank you for pointing to this.
>>>>
>>>> On  1.11.2017 14:16, Mauro Carvalho Chehab wrote:  
>>>>> if output->wm_num is bigger than 1, the value for reg is    
>>>> If output->wn_num equals 2, we handle all cases (i == 0, i == 1) and set reg properly.
>>>> If output->wn_num is bigger than 2, then reg will not be initialized. However this is something that "cannot happen" and because of this the case is not handled.
>>>>
>>>> So I think that there is nothing wrong really but we have to do something to remove the warning. I agree with your patch, it is technically not a right value for reg but any cases in which wm_num is bigger than 2 are not supported anyway and should not happen.  
>>>
>>> Thanks for your promptly answer. Well, if i is always at the [0..1] range,
>>> then I guess the enclosed patch is actually better.  
>>
>> I don't think that there is a lot of difference practically. If this one fixes the warning too, then it is fine for me. Thank you for working on this.
> 
> Yes, it fixes the warning. I guess the main advantage of version 2 is
> that, if it would ever be possible to have more than 2 outputs, it
> should be clearer that the logic at break need changes.
> 
> So, if ok for you, I'll stick with version 2. It would be great if
> you could give your ack on that.

Sure, and you can add:
Acked-by: Todor Tomov <todor.tomov@xxxxxxxxxx>

Thank you.
Todor



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