linux-kernel - Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements explicit

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Message-ID: <20151005165856.GL14464@wotan.suse.de>
Date:	Mon, 5 Oct 2015 18:58:56 +0200
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	Randy Dunlap <rdunlap@...radead.org>
Cc:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>, arnd@...db.de,
	linux-arch@...r.kernel.org, mingo@...nel.org,
	schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
	linux-s390@...r.kernel.org, bp@...e.de, linux@...ck-us.net,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	rostedt@...dmis.org
Subject: Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements
 explicit

On Sat, Oct 03, 2015 at 05:14:20PM -0700, Randy Dunlap wrote:
> On 10/02/15 16:17, Luis R. Rodriguez wrote:
> > On Fri, Aug 28, 2015 at 07:13:08PM -0700, Randy Dunlap wrote:
> >> On 08/28/15 17:17, Luis R. Rodriguez wrote:
> >>>
> >>>  arch/s390/Kconfig                 |  8 +++++
> >>>  arch/s390/include/asm/io.h        | 11 -------
> >>>  arch/s390/include/asm/pci.h       |  2 --
> >>>  arch/s390/include/asm/pci_iomap.h | 33 +++++++++++++++++++++
> >>>  arch/s390/pci/pci.c               |  2 ++
> >>>  include/asm-generic/io.h          | 12 --------
> >>>  include/asm-generic/iomap.h       | 10 -------
> >>>  include/asm-generic/pci_iomap.h   | 62 +++++++++++++++++++++++++++++++++++----
> >>>  lib/Kconfig                       |  1 +
> >>>  lib/pci_iomap.c                   |  5 ++++
> >>>  10 files changed, 105 insertions(+), 41 deletions(-)
> >>>  create mode 100644 arch/s390/include/asm/pci_iomap.h
> >>>
> >>> diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> >>> index 1d57000b1b24..1217b7db4265 100644
> >>> --- a/arch/s390/Kconfig
> >>> +++ b/arch/s390/Kconfig
> >>> @@ -614,6 +614,14 @@ endif	# PCI
> >>>  config PCI_DOMAINS
> >>>  	def_bool PCI
> >>>  
> >>> +config ARCH_PCI_NON_DISJUNCTIVE
> >>> +	def_bool PCI
> >>> +	help
> >>> +	  On the S390 architecture PCI BAR spaces are not disjunctive, as such
> >>
> >> 	are not disjoint?  may be overlapping?
> >>
> >>> +	  the PCI bar is required on a series of otherwise asm generic PCI
> >>> +	  routines, as such S390 requires itw own implemention for these
> >>
> >> 	                                  its own implementation
> > 
> > Thanks, I've re-written this as:
> > 
> > mcgrof@...on ~/linux-next (git::(no branch, rebasing 20150805-pend-all))$ git diff
> > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> > index f4725d1af438..8ba5826ed13b 100644
> > --- a/arch/s390/Kconfig
> > +++ b/arch/s390/Kconfig
> > @@ -618,10 +618,10 @@ config PCI_DOMAINS
> >  config ARCH_PCI_NON_DISJUNCTIVE
> >         def_bool PCI
> >         help
> > -         On the S390 architecture PCI BAR spaces are not disjunctive, as such
> > -         the PCI bar is required on a series of otherwise asm generic PCI
> > -         routines, as such S390 requires itw own implemention for these
> > -         routines.
> > +         On the S390 architecture PCI BAR spaces may overlap with each other,
> 
> That "other," should not end with a comma.  Either use a semi-colon or use a
> period and begin the next sentence with Because.

Amended, thanks.

 Luis
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