Re: [PATCH v2] usb: typec: Expose Product Type VDOs via sysfs

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On Thu, Oct 22, 2020 at 12:13:54AM -0700, Prashant Malani wrote:
> Thanks for reviewing the patch, Greg.
> 
> On Wed, Oct 21, 2020 at 11:56 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On Wed, Oct 21, 2020 at 11:15:54PM -0700, Prashant Malani wrote:
> > >
> > > diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec
> > > index b834671522d6..16440a236b66 100644
> > > --- a/Documentation/ABI/testing/sysfs-class-typec
> > > +++ b/Documentation/ABI/testing/sysfs-class-typec
> > > @@ -170,6 +170,14 @@ Description:
> > >               will show 0 until Discover Identity command result becomes
> > >               available. The value can be polled.
> > >
> > > +What:                /sys/class/typec/<port>-partner/identity/product_type_vdo
> > > +Date:                October 2020
> > > +Contact:     Prashant Malani <pmalani@xxxxxxxxxxxx>
> > > +Description:
> > > +             Product Type VDOs part of Discover Identity command result. 3 values
> > > +             are displayed (for the 3 possible Product Type VDOs), one per line.
> >
> > sysfs is "one value per file", not "one value per line".  This is not
> > ok.
> 
> I see. Would listing these out as three separate vdos (i.e vdo0, vdo1,
> vdo2) be better?

Given that your current implementation is not acceptable, something has
to change :)

thanks,

greg k-h



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