RE: [PATCH v3 4/8] platform/x86: wmi: create character devices when requested by drivers

From	<Mario.Limonciello@dell.com>
Newsgroups	linux.kernel
Subject	RE: [PATCH v3 4/8] platform/x86: wmi: create character devices when requested by drivers
Date	2017-10-01 16:30 +0200
Message-ID	<uvNpM-3fL-13@gated-at.bofh.it> (permalink)
References	(1 earlier) <uuyj7-40H-13@gated-at.bofh.it> <uvfeq-5PS-15@gated-at.bofh.it> <uvla9-1Al-9@gated-at.bofh.it> <uvvCx-8mB-11@gated-at.bofh.it> <uvMtJ-2Hh-35@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> -----Original Message-----
> From: Greg KH [mailto:gregkh@linuxfoundation.org]
> Sent: Sunday, October 1, 2017 8:24 AM
> To: Limonciello, Mario <Mario_Limonciello@Dell.com>
> Cc: dvhart@infradead.org; andy.shevchenko@gmail.com; linux-
> kernel@vger.kernel.org; platform-driver-x86@vger.kernel.org; luto@kernel.org;
> quasisec@google.com; pali.rohar@gmail.com; rjw@rjwysocki.net;
> mjg59@google.com; hch@lst.de
> Subject: Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when
> requested by drivers
> 
> On Sat, Sep 30, 2017 at 07:26:57PM +0000, Mario.Limonciello@dell.com wrote:
> > I think what's Darren's most interested in is the that conceptually this is
> > an approach you can agree with.
> >
> > "A WMI vendor driver binds to the WMI bus and requests the WMI bus to
> create
> > a character device.  The WMI bus creates a character device /dev/wmi/$driver
> > which the WMI vendor driver will process all various file operations."
> 
> We've been over this before, let's see that actual implementation which
> defines the "will process all..." implementation to see if that is
> actually an acceptable thing.
> 
> thanks,
> 
> greg k-h

I'm working on changes still (that you'll be CC on), but I don't expect this specific 
concept to change in the future changes:

Bus creating character device:
https://patchwork.kernel.org/patch/9975283/

Driver requesting character device:
https://patchwork.kernel.org/patch/9975263/

Thread

[PATCH v3 4/8] platform/x86: wmi: create character devices when requested by drivers Mario Limonciello <mario.limonciello@dell.com> - 2017-09-28 06:10 +0200
  Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Darren Hart <dvhart@infradead.org> - 2017-09-30 04:00 +0200
    Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-09-30 10:20 +0200
      RE: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers <Mario.Limonciello@dell.com> - 2017-09-30 21:30 +0200
        Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Greg KH <gregkh@linuxfoundation.org> - 2017-10-01 15:30 +0200
          RE: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers <Mario.Limonciello@dell.com> - 2017-10-01 16:30 +0200
            Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Greg KH <gregkh@linuxfoundation.org> - 2017-10-01 20:10 +0200
      Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Darren Hart <dvhart@infradead.org> - 2017-10-02 03:00 +0200
        Re: [PATCH v3 4/8] platform/x86: wmi: create character devices when  requested by drivers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-10-02 11:30 +0200

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