From: Arnd Bergmann <arnd@arndb.de>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Kevin Cernekee <cernekee@gmail.com>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Mundt <lethal@linux-sh.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
Myron Stowe <myron.stowe@redhat.com>,
Paul Gortmaker <paul.gortmaker@windriver.com>,
Lucas De Marchi <lucas.demarchi@profusion.mobi>,
Dmitry Kasatkin <dmitry.kasatkin@intel.com>,
James Morris <jmorris@namei.org>,
"John W. Linville" <linville@tuxdriver.com>,
Michael Witten <mfwitten@gmail.com>,
linux-mips@linux-mips.org, linux-kernel@vger.kernel.org,
linux-sh@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH 1/3] lib: add NO_GENERIC_PCI_IOPORT_MAP
Date: Mon, 30 Jan 2012 20:04:32 +0000 [thread overview]
Message-ID: <201201302004.33083.arnd@arndb.de> (raw)
In-Reply-To: <20120130161818.GA9345@redhat.com>
On Monday 30 January 2012, Michael S. Tsirkin wrote:
> >
> > +/*
> > + * Create a virtual mapping cookie for a port on a given PCI device.
> > + * Do not call this directly, it exists to make it easier for architectures
> > + * to override.
> > + */
> > +#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
> > +extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
> > + unsigned int nr);
> > +#else
> > +static inline void __iomem *__pci_ioport_map(struct pci_dev *dev,
> > + unsigned long port, unsigned int nr)
> > +{
> > + return ioport_map(port, nr);
> > +}
> > +#endif
> >
> > Arnd
>
> It would be nicer in that it would
> make the kernel a bit smaller for generic architectures
> but this would need to go into a separate header:
> it depends on io.h and io.h depends on pci_iomap.h.
Adding extra dependencies is not good here, I agree.
Maybe a better solution is to use a macro instead of an inline
function then:
#define __pci_ioport_map(dev, port, nr) ioport_map(port, nr)
In general, macros should be avoided, but I think it's the
best tradeoff in this case.
Arnd
next prev parent reply other threads:[~2012-01-30 20:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-30 12:18 [PATCH 0/3] arch: fix ioport mapping on mips,sh Michael S. Tsirkin
2012-01-30 12:18 ` [PATCH 1/3] lib: add NO_GENERIC_PCI_IOPORT_MAP Michael S. Tsirkin
2012-01-30 14:19 ` Shane McDonald
2012-01-30 14:25 ` Michael S. Tsirkin
2012-01-30 15:51 ` Arnd Bergmann
2012-01-30 16:18 ` Michael S. Tsirkin
2012-01-30 20:04 ` Arnd Bergmann [this message]
2012-01-31 0:22 ` Michael S. Tsirkin
2012-01-31 15:59 ` Arnd Bergmann
2012-01-31 21:18 ` Michael S. Tsirkin
2012-01-30 12:18 ` [PATCH 2/3] mips: use the the PCI controller's io_map_base Michael S. Tsirkin
2012-01-30 17:49 ` Sergei Shtylyov
2012-01-30 12:19 ` [PATCH 3/3] sh: use the the PCI channels's io_map_base Michael S. Tsirkin
2012-01-30 17:50 ` Sergei Shtylyov
2012-01-30 16:09 ` [PATCH 0/3] arch: fix ioport mapping on mips,sh Arnd Bergmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201201302004.33083.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=cernekee@gmail.com \
--cc=dmitry.kasatkin@intel.com \
--cc=jbarnes@virtuousgeek.org \
--cc=jmorris@namei.org \
--cc=lethal@linux-sh.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=linux-sh@vger.kernel.org \
--cc=linville@tuxdriver.com \
--cc=lucas.demarchi@profusion.mobi \
--cc=mfwitten@gmail.com \
--cc=mst@redhat.com \
--cc=myron.stowe@redhat.com \
--cc=paul.gortmaker@windriver.com \
--cc=ralf@linux-mips.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).