linux-kernel - Re: [PATCH v8 0/7] Add pci_dev_for_each

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Message-ID: <20230405201832.GA3638070@bhelgaas>
Date:   Wed, 5 Apr 2023 15:18:32 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Randy Dunlap <rdunlap@...radead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Philippe Mathieu-Daudé <philmd@...aro.org>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Pali Rohár <pali@...nel.org>,
        "Maciej W. Rozycki" <macro@...am.me.uk>,
        Juergen Gross <jgross@...e.com>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        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, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-pci@...r.kernel.org,
        xen-devel@...ts.xenproject.org, linux-acpi@...r.kernel.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>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Anatolij Gustschin <agust@...x.de>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        "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 v8 0/7] Add pci_dev_for_each_resource() helper and update
 users

On Wed, Apr 05, 2023 at 11:28:27AM +0300, Andy Shevchenko wrote:
> On Tue, Apr 04, 2023 at 11:11:01AM -0500, Bjorn Helgaas wrote:
> > On Thu, Mar 30, 2023 at 07:24:27PM +0300, Andy Shevchenko wrote:
> > > Provide two new helper macros to iterate over PCI device resources and
> > > convert users.
> > > 
> > > Looking at it, refactor existing pci_bus_for_each_resource() and convert
> > > users accordingly.

> > Applied 2-7 to pci/resource for v6.4, thanks, I really like this!
> 
> Btw, can you actually drop patch 7, please?

Done.

> > I omitted
> > 
> >   [1/7] kernel.h: Split out COUNT_ARGS() and CONCATENATE()"
> > 
> > only because it's not essential to this series and has only a trivial
> > one-line impact on include/linux/pci.h.
> 
> I'm not sure I understood what exactly "essentiality" means to you, but
> I included that because it makes the split which can be used later by
> others and not including kernel.h in the header is the objective I want
> to achieve. Without this patch the achievement is going to be deferred.
> Yet, this, as you have noticed, allows to compile and use the macros in
> the rest of the patches.

I haven't followed the kernel.h splitting, and I try to avoid
incidental changes outside of the files I maintain, so I just wanted
to keep this series purely PCI and avoid any possible objections to a
new include file or discussion about how it should be done.