linux-kernel - Re: [PATCH v2 4/4] pcmcia: Convert to use pci_bus_for_each_resource

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Message-ID: <Y2P2ja26ikNecTsv@smile.fi.intel.com>
Date:   Thu, 3 Nov 2022 19:12:45 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Dominik Brodowski <linux@...inikbrodowski.net>
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Bjorn Helgaas <helgaas@...nel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        sparclinux@...r.kernel.org, linux-pci@...r.kernel.org,
        xen-devel@...ts.xenproject.org, Miguel Ojeda <ojeda@...nel.org>,
        Richard Henderson <richard.henderson@...aro.org>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        "David S. Miller" <davem@...emloft.net>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Subject: Re: [PATCH v2 4/4] pcmcia: Convert to use
 pci_bus_for_each_resource_p()

On Thu, Nov 03, 2022 at 06:03:24PM +0100, Dominik Brodowski wrote:
> Am Thu, Nov 03, 2022 at 06:46:44PM +0200 schrieb Andy Shevchenko:

...

> > -
> > -	for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) {
> > -		res = s->cb_dev->bus->resource[i];
> > -#else
> > -	pci_bus_for_each_resource(s->cb_dev->bus, res, i) {
> >  #endif
> > +
> > +	pci_bus_for_each_resource_p(s->cb_dev->bus, res) {
> >  		if (!res)
> >  			continue;
> 
> Doesn't this remove the proper iterator for X86? Even if that is the right
> thing to do, it needs an explict explanation.

I dunno what was in 2010, but reading code now I have found no differences in
the logic on how resources are being iterated in these two pieces of code.

But fine, I will add a line to a commit message about this change.

Considering this is done, can you issue your conditional tag so I will
incorporate it in v3?

-- 
With Best Regards,
Andy Shevchenko