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SubjectRE: [PATCH v3 4/8] platform/x86: wmi: create character devices when requested by drivers
Date
> -----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/

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