linux-kernel - Re: [PATCH v2 00/10] drivers, provide a way to add sysfs groups easily

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Message-ID: <CACvgo52Mqag6wzWqJPMqbtbSsqDgPyyG33huAd+cQgFKQhfQUw@mail.gmail.com>
Date:   Thu, 14 May 2020 12:48:32 +0100
From:   Emil Velikov <emil.l.velikov@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>, x86@...nel.org,
        linux-input@...r.kernel.org,
        linux-fbdev <linux-fbdev@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sudeep Holla <sudeep.holla@....com>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>,
        platform-driver-x86@...r.kernel.org,
        Tony Prisk <linux@...sktech.co.nz>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Darren Hart <dvhart@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Richard Gong <richard.gong@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        LAKML <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 00/10] drivers, provide a way to add sysfs groups easily

On Thu, 14 May 2020 at 08:16, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Wed, May 13, 2020 at 11:18:15PM +0100, Emil Velikov wrote:
> > Hi Greg,
> >
> > On Fri, 2 Aug 2019 at 11:46, Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org> wrote:
> >
> > >
> > > I have now done this with patch 1/10.  Here's the pull info if any
> > > subsystem maintainer wants to suck this into their tree to provide the
> > > ability for drivers to add/remove attribute groups easily.
> > >
> > > This is part of my driver-core tree now, and will go to Linus for
> > > 5.4-rc1, along with a few platform drivers that have been acked by their
> > > various subsystem maintainers that convert them to use this new
> > > functionality.
> > >
> > > If anyone has any questions about this, please let me know.
> > >
> > > thanks,
> > >
> > > greg k-h
> > >
> > > -------------------
> > >
> > > The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:
> > >
> > >   Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)
> > >
> > > are available in the Git repository at:
> > >
> > >   git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git tags/dev_groups_all_drivers
> > >
> > > for you to fetch changes up to 23b6904442d08b7dbed7622ed33b236d41a3aa8b:
> > >
> > >   driver core: add dev_groups to all drivers (2019-08-02 12:37:53 +0200)
> > >
> > > ----------------------------------------------------------------
> > > dev_groups added to struct driver
> > >
> > > Persistent tag for others to pull this branch from
> > >
> > > This is the first patch in a longer series that adds the ability for the
> > > driver core to create and remove a list of attribute groups
> > > automatically when the device is bound/unbound from a specific driver.
> > >
> > > See:
> > >         https://lore.kernel.org/r/20190731124349.4474-2-gregkh@linuxfoundation.org
> > > for details on this patch, and examples of how to use it in other
> > > drivers.
> > >
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > >
> > > ----------------------------------------------------------------
> > > Dmitry Torokhov (1):
> > >       driver core: add dev_groups to all drivers
> > >
> > >  drivers/base/dd.c      | 14 ++++++++++++++
> > >  include/linux/device.h |  3 +++
> > >  2 files changed, 17 insertions(+)
> > > _______________________________________________
> >
> > Was planning to re-spin DRM a series which uses .dev_groups, although
> > I cannot see the core patch.
> > Did the it get reverted or simply fell though the cracks?
>
> Nope, it's in there:
>         23b6904442d0 ("driver core: add dev_groups to all drivers")
> which showed up in the 5.4 kernel release.
>
> Lots of other subsystems have already been converted to use this, do you
> not see it in your tree?
>
A case of PEBKAC it seems - I was looking at a 5.3 checkout somehow.

Thanks for the core work. Will check/merge the fbdev patches over the
next few days and polish drm land.

-Emil