Re: [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()

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To: Keith Busch <kbusch@xxxxxxxxxx>
Subject: Re: [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Tue, 14 Mar 2023 20:39:56 +0200
Cc: Mickaël Salaün <mic@xxxxxxxxxxx>, Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>, Krzysztof Wilczyński <kw@xxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Randy Dunlap <rdunlap@xxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Bjorn Helgaas <helgaas@xxxxxxxxxx>, "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>, Niklas Schnelle <schnelle@xxxxxxxxxxxxx>, Pali Rohár <pali@xxxxxxxxxx>, "Maciej W. Rozycki" <macro@xxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, Miguel Ojeda <ojeda@xxxxxxxxxx>, Richard Henderson <richard.henderson@xxxxxxxxxx>, Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Andrew Lunn <andrew@xxxxxxx>, Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>, Gregory Clement <gregory.clement@xxxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Anatolij Gustschin <agust@xxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
In-reply-to: <ZAusCnLSXeEcpQs+@kbusch-mbp.dhcp.thefacebook.com>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
References: <20230310171416.23356-1-andriy.shevchenko@linux.intel.com> <20230310171416.23356-2-andriy.shevchenko@linux.intel.com> <ZAusCnLSXeEcpQs+@kbusch-mbp.dhcp.thefacebook.com>

On Fri, Mar 10, 2023 at 03:15:38PM -0700, Keith Busch wrote:
> On Fri, Mar 10, 2023 at 07:14:13PM +0200, Andy Shevchenko wrote:

...

> > +#define pci_dev_for_each_resource_p(dev, res)				\
> > +	__pci_dev_for_each_resource(dev, res, i, unsigned int)
> 
> It looks dangerous to have a macro declare a variable when starting a new
> scope. How do you know the name 'i' won't clash with something defined above?

I'll rename. Thank you.

-- 
With Best Regards,
Andy Shevchenko

References:
- [PATCH v4 0/4] PCI: Add pci_dev_for_each_resource() helper and update users
  - From: Andy Shevchenko
- [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()
  - From: Andy Shevchenko
- Re: [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()
  - From: Keith Busch

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