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From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
	Andy Shevchenko <andy@kernel.org>,
	Linus Walleij <linusw@kernel.org>
Subject: Re: [PATCH v1 5/5] pinctrl: intel: define iterator variables inside for-loop
Date: Thu, 19 Mar 2026 08:09:25 +0100	[thread overview]
Message-ID: <20260319070925.GS2275908@black.igk.intel.com> (raw)
In-Reply-To: <abuedvr8_FauBMJW@ashevche-desk.local>

On Thu, Mar 19, 2026 at 08:57:58AM +0200, Andy Shevchenko wrote:
> On Thu, Mar 19, 2026 at 07:02:21AM +0100, Mika Westerberg wrote:
> > On Wed, Mar 18, 2026 at 04:10:19PM +0100, Andy Shevchenko wrote:
> > > Reduce the scope of the iterator variables by defining them inside
> > > the respective for-loops. This makes code more robust against reuse
> > > of the same variable in the future, which might lead to some mistakes.
> 
> ...
> 
> > > -	int i;
> > 
> > If there are multiple loops, I prefer to declare the variable outside of
> > them.
> 
> Why?! It's exactly where it make even more sense to hide.

I disagree.

> 
> > If it is just a single loop then for (int i = 0, ..) is fine.
> 
> ...
> 
> > > -	for (i = 0; i < grp->grp.npins; i++) {
> > > +	for (unsigned int i = 0; i < grp->grp.npins; i++) {
> > 
> > also why you use "unsigned int". int i is fine here.
> 
> Because grp.npins is unsigned. This is the common sense to use the same
> variable type that's used for the (upper) limit.

No, just use "int i" there. Compiler is fine and this is more idiomatic C
anyways.

  reply	other threads:[~2026-03-19  7:09 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-18 15:10 [PATCH v1 0/5] pinctrl: intel: capability handling rework Andy Shevchenko
2026-03-18 15:10 ` [PATCH v1 1/5] pinctrl: intel: Improve capability support Andy Shevchenko
2026-03-19  5:57   ` Mika Westerberg
2026-03-19  7:00     ` Andy Shevchenko
2026-03-18 15:10 ` [PATCH v1 2/5] pinctrl: intel: Fix the revision for new features (1kOhm PD, HW debouncer) Andy Shevchenko
2026-03-19  5:58   ` Mika Westerberg
2026-03-19  7:00     ` Andy Shevchenko
2026-03-18 15:10 ` [PATCH v1 3/5] pinctrl: intel: Enable 3-bit PAD_OWN feature Andy Shevchenko
2026-03-19  5:58   ` Mika Westerberg
2026-03-19  7:00     ` Andy Shevchenko
2026-03-18 15:10 ` [PATCH v1 4/5] pinctrl: intel: Refactor intel_gpio_add_pin_ranges() to make it shorter Andy Shevchenko
2026-03-19  6:03   ` Mika Westerberg
2026-03-19  6:56     ` Andy Shevchenko
2026-03-19  7:07       ` Mika Westerberg
2026-03-19  7:18         ` Andy Shevchenko
2026-03-18 15:10 ` [PATCH v1 5/5] pinctrl: intel: define iterator variables inside for-loop Andy Shevchenko
2026-03-19  6:02   ` Mika Westerberg
2026-03-19  6:57     ` Andy Shevchenko
2026-03-19  7:09       ` Mika Westerberg [this message]
2026-03-19  7:20         ` Andy Shevchenko
2026-03-19 10:41           ` Mika Westerberg

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