linux-kernel - Re: [PATCH V9 1/2] ACPI, PCI, irq: remove interrupt count restriction

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Date:	Fri, 01 Jan 2016 01:48:40 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
Cc:	Sinan Kaya <okaya@...eaurora.org>,
	Christopher Covington <cov@...eaurora.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	Timur Tabi <timur@...eaurora.org>, jcm@...hat.com,
	helgaas@...nel.org, Len Brown <lenb@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V9 1/2] ACPI, PCI, irq: remove interrupt count restriction

On Wednesday, December 30, 2015 09:55:35 PM Andy Shevchenko wrote:
> On Wed, Dec 30, 2015 at 9:17 PM, Sinan Kaya <okaya@...eaurora.org> wrote:
> > On 12/30/2015 8:28 AM, Andy Shevchenko wrote:
> >> Yep, I meant not to use an additional variable.
> >>
> >>> > BTW, I suggest you spend some time around checkpatch for contributions. I could
> >>> > have caught most of the issues you are generally concerned before submitting a patch.
> >> Is it a question?
> >
> > It is a request not a question. I hate wasting your time and my time with things that I could
> > have fixed before submitting a patch.
> >
> > I ran the checkpatch and it said I'm good to go. But, obviously I'm not.
> 
> Hmm… checkpatch.pl is just a small helper to fix style issues. Here is
> just a common sense rule, or kind of Occam's razor: no need to have
> more variables then needed if it doesn't improve something really
> significantly.

That said, compilers optimize things anyway, so using an extra local variable
shouldn't matter for the resulting machine code.

Thanks,
Rafael

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