linux-kernel - Re: [PATCH 1/4] drivers/bus: Added Freescale Management Complex APIs

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Date:	Thu, 18 Sep 2014 18:29:06 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Yoder Stuart-B08248 <stuart.yoder@...escale.com>
CC:	Phillips Kim-R1AAHA <Kim.Phillips@...escale.com>,
	Alexander Graf <agraf@...e.de>,
	Rivera Jose-B46482 <German.Rivera@...escale.com>,
	<gregkh@...uxfoundation.org>, <arnd@...db.de>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] drivers/bus: Added Freescale Management Complex APIs

On Thu, 2014-09-18 at 18:13 -0500, Yoder Stuart-B08248 wrote:
> 
> > -----Original Message-----
> > From: Kim Phillips [mailto:kim.phillips@...escale.com]
> > Sent: Thursday, September 18, 2014 3:23 PM
> > To: Alexander Graf
> > Cc: Rivera Jose-B46482; <gregkh@...uxfoundation.org>; <arnd@...db.de>; <linux-kernel@...r.kernel.org>; Yoder
> > Stuart-B08248; Wood Scott-B07421; <linuxppc-release@...ux.freescale.net>
> > Subject: Re: [PATCH 1/4] drivers/bus: Added Freescale Management Complex APIs
> > 
> > On Thu, 18 Sep 2014 15:14:03 +0200
> > Alexander Graf <agraf@...e.de> wrote:
> > 
> > > > Am 18.09.2014 um 06:17 schrieb German Rivera <German.Rivera@...escale.com>:
> > > >
> > > >> On 09/15/2014 06:44 PM, Kim Phillips wrote:
> > > >> On Thu, 11 Sep 2014 12:34:21 -0500
> > > >> "J. German Rivera" <German.Rivera@...escale.com> wrote:
> > > >>
> > > >>> From: "J. German Rivera" <German.Rivera@...escale.com>
> > > >>>
> > > >>> APIs to access the Management Complex (MC) hardware
> > > >>> module of Freescale LS2 SoCs. This patch includes
> > > >>> APIs to check the MC firmware version and to manipulate
> > > >>> DPRC objects in the MC.
> > > >>>
> > > >>> Signed-off-by: J. German Rivera <German.Rivera@...escale.com>
> > > >>> Signed-off-by: Stuart Yoder <stuart.yoder@...escale.com>
> > > >>> ---
> > > >>>  drivers/bus/fsl-mc/dpmng.c         |   93 +++++
> > > >>>  drivers/bus/fsl-mc/dprc.c          |  504 +++++++++++++++++++++++
> > > >>>  drivers/bus/fsl-mc/fsl_dpmng_cmd.h |   83 ++++
> > > >>>  drivers/bus/fsl-mc/fsl_dprc_cmd.h  |  545 +++++++++++++++++++++++++
> > > >>>  drivers/bus/fsl-mc/fsl_mc_sys.c    |  237 +++++++++++
> > > >>>  include/linux/fsl_dpmng.h          |  120 ++++++
> > > >>>  include/linux/fsl_dprc.h           |  790 ++++++++++++++++++++++++++++++++++++
> > > >>>  include/linux/fsl_mc_cmd.h         |  182 +++++++++
> > > >>>  include/linux/fsl_mc_sys.h         |   81 ++++
> > > >>>  9 files changed, 2635 insertions(+)
> > > >>>  create mode 100644 drivers/bus/fsl-mc/dpmng.c
> > > >>>  create mode 100644 drivers/bus/fsl-mc/dprc.c
> > > >>>  create mode 100644 drivers/bus/fsl-mc/fsl_dpmng_cmd.h
> > > >>>  create mode 100644 drivers/bus/fsl-mc/fsl_dprc_cmd.h
> > > >>>  create mode 100644 drivers/bus/fsl-mc/fsl_mc_sys.c
> > > >>>  create mode 100644 include/linux/fsl_dpmng.h
> > > >>>  create mode 100644 include/linux/fsl_dprc.h
> > > >>>  create mode 100644 include/linux/fsl_mc_cmd.h
> > > >>>  create mode 100644 include/linux/fsl_mc_sys.h
> > > >>
> > > >> the fsl prefix in the filename fsl_dpmng_cmd.h is redundant with
> > > >> its directory name fsl-mc/.  Note that I find dashes ('-') in
> > > >> filenames make them easier to type: is there a reason we're using
> > > >> underscores here?
> > > > This is a convention that we decided early on '-' for directory names
> > > > and '_' for file names.
> > 
> > based on what?
> 
> We looked at how generally files were named in kernel source.
> 
> For what it's worth in my 3.16 branch:
> 
> $ find drivers/ -type f | grep '-' | wc -l
> 4308
> $ find drivers/ -type f | grep '_' | wc -l
> 6507
> 
> ...it seems that there are far more files named with underscores.  If Greg
> or Arnd wants the files renamed, fine, but other than that I see no reason
> to change this.

60% isn't "far more".  Regardless of whether we change this (dashes are
easier to read, easier to type, and are what English normally uses --
underscores are for when you can't use a dash for technical reasons),
let's not start making rules based on weak statistical inferences.

Plus, why limit the search to drivers?  E.g. if you looked at arch/
you'd reach the opposite conclusion.

-Scott


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