linux-kernel - Re: [PATCH] usb: isp1760: compress return logic into one line

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Date:   Tue, 11 Jul 2017 10:10:30 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] usb: isp1760: compress return logic into one line

Am Montag, den 10.07.2017, 14:58 -0500 schrieb  Gustavo A. R. Silva :
> Hi Oliver,
> 
> Quoting Oliver Neukum <oneukum@...e.com>:
> 
> > 
> > Am Sonntag, den 09.07.2017, 21:00 -0500 schrieb  Gustavo A. R. Silva :
> > > 
> > > Simplify return logic to avoid unnecessary variable assignment.
> > > 
> > > This issue was detected using Coccinelle and the following
> > > semantic patch:
> > > 
> > 
> > Hi,
> > 
> > I need to ask: Where is the improvement? The compiler does not bother
> > and for the human reader you do not do anything obvious and you
> > decreased grepability.
> > 
> 
> The declaration of local variable _retval_ was removed also.
> So both, variable declaration and assignment removal are the improvements.

Yeah, but a variable called "retval" has an extremely clear function.
Simplifying code is an improvement. Making it clearer is an
improvement.
I am sorry but the proposed change is almost like removing blank lines
to make it more compact

> Regarding the greability, I think that depends on the context.

"retval" has a clear function and is unique.

	Regards
		Oliver