linux-kernel - Re: [PATCH v2 4/7] usb: dwc3: Program GFLADJ

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Date:   Thu, 27 Jan 2022 11:45:25 -0500
From:   Sean Anderson <sean.anderson@...o.com>
To:     Felipe Balbi <balbi@...nel.org>
Cc:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        Balaji Prakash J <bjagadee@...eaurora.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Robert Hancock <robert.hancock@...ian.com>,
        Baruch Siach <baruch@...s.co.il>
Subject: Re: [PATCH v2 4/7] usb: dwc3: Program GFLADJ



On 1/26/22 5:53 AM, Felipe Balbi wrote:
> 
> Hi,
> 
> Sean Anderson <sean.anderson@...o.com> writes:
> 
>> On 1/24/22 9:11 PM, Thinh Nguyen wrote:
>>>>>> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
>>>>>> index 5214daceda86..883e119377f0 100644
>>>>>> --- a/drivers/usb/dwc3/core.c
>>>>>> +++ b/drivers/usb/dwc3/core.c
>>>>>> @@ -348,7 +348,7 @@ static void dwc3_frame_length_adjustment(struct dwc3 *dwc)
>>>>>>  static void dwc3_ref_clk_period(struct dwc3 *dwc)
>>>>>>  {
>>>>>>  	u32 reg;
>>>>>> -	unsigned long rate, period;
>>>>>> +	unsigned long decr, fladj, rate, period;
>>>>>
>>>>> Minor style nit: Felipe prefers to keep the declaration on separate
>>>>> lines, let's keep it consistent with the rest in this driver.
>>>> 
>>>> So 
>>>> 
>>>> unsigned int decr;
>>>> unsigned int fladj;
>>>> unsigned int rate;
>>>> unsigned int period;
>>>> 
>>>> ?
>>>> 
>>>> Frankly that seems rather verbose.
>>> 
>>> A couple of the benefits of having it like this is to help with viewing
>>> git-blame if we introduce new variables and help with backporting fix
>>> patch a bit simpler. Mainly I'm just following Felipe's style and keep
>>> it consistent in this driver, but I don't think it's a big deal.
>>
>> *shrug*
>>
>> If it's the subsystem style I will rewrite it.
>>
>> (btw is this documented anywhere for future contributors?)
> 
> https://www.kernel.org/doc/html/latest/process/coding-style.html#commenting
> 
> "To this end, use just one data declaration per line (no commas for
> multiple data declarations)"
> 

This is just if you want to add comments.

--Sean