linux-kernel - Re: [PATCH v2] staging: greybus: remove tabs to fix line length and merge lines

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Date:   Mon, 20 Mar 2023 13:53:18 +0500
From:   Khadija Kamran <kamrankhadijadj@...il.com>
To:     Ira Weiny <ira.weiny@...el.com>
Cc:     outreachy@...ts.linux.dev,
        Vaibhav Hiremath <hvaibhav.linux@...il.com>,
        Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] staging: greybus: remove tabs to fix line length and
 merge lines

On Sun, Mar 12, 2023 at 06:01:03PM -0700, Ira Weiny wrote:
> Khadija Kamran wrote:
> > In file drivers/staging/greybus/arche-platform.c,
> > - Length of line 181 exceeds 100 columns, fix by removing tabs from the
> >   line.
> > - If condition and spin_unlock_...() call is split into two lines, join
> > them to form a single line.
> > 
> > Signed-off-by: Khadija Kamran <kamrankhadijadj@...il.com>
> 
> Fundamentally the problem with arche_platform_wd_irq() is that the
> indentation is too great.
> 
> "... if you need more than 3 levels of indentation, you’re screwed anyway,
> and should fix your program."
> 
> 	-- https://www.kernel.org/doc/html/v4.10/process/coding-style.html#indentation
> 
> I think a better solution would be to refactor the entire function.  This
> would make the logic of the function more clear as well IMHO.
> 
> Here is another tip to help:
> 
> https://www.kernel.org/doc/html/v4.10/process/coding-style.html#centralized-exiting-of-functions
> 
> Do you think you could try that?

Hey Ira!

Sorry about the late reply. Thank you for your feedback. I have looked
into the above link. Are you referring to the use of goto statements in
arche_platform_wd_irq() call?

Thank you!

Regards,
Khadija


> Ira
> 
> > ---
> > Changes in v2:
> >  - Change the subject and log message
> >  - Merge if condition and spin_unlock...() from two lines to one 
> >  drivers/staging/greybus/arche-platform.c | 8 +++-----
> >  1 file changed, 3 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c
> > index fcbd5f71eff2..00ed5dfd7915 100644
> > --- a/drivers/staging/greybus/arche-platform.c
> > +++ b/drivers/staging/greybus/arche-platform.c
> > @@ -176,12 +176,10 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid)
> >  				 * Check we are not in middle of irq thread
> >  				 * already
> >  				 */
> > -				if (arche_pdata->wake_detect_state !=
> > -						WD_STATE_COLDBOOT_START) {
> > +				if (arche_pdata->wake_detect_state != WD_STATE_COLDBOOT_START) {
> >  					arche_platform_set_wake_detect_state(arche_pdata,
> > -									     WD_STATE_COLDBOOT_TRIG);
> > -					spin_unlock_irqrestore(&arche_pdata->wake_lock,
> > -							       flags);
> > +						WD_STATE_COLDBOOT_TRIG);
> > +					spin_unlock_irqrestore(&arche_pdata->wake_lock, flags);
> >  					return IRQ_WAKE_THREAD;
> >  				}
> >  			}
> > -- 
> > 2.34.1
> > 
> > 
> 
>