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

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Message-ID: <87mtji7onx.fsf@kernel.org>
Date:   Wed, 26 Jan 2022 12:53:28 +0200
From:   Felipe Balbi <balbi@...nel.org>
To:     Sean Anderson <sean.anderson@...o.com>
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


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)"

-- 
balbi