linux-kernel - Re: [RFC PATCH v2 3/3] drm: initialize accel framework

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Date:   Sun, 6 Nov 2022 12:55:55 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     Jeffrey Hugo <quic_jhugo@...cinc.com>
Cc:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Jason Gunthorpe <jgg@...dia.com>,
        John Hubbard <jhubbard@...dia.com>,
        Alex Deucher <alexander.deucher@....com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>,
        Jiho Chu <jiho.chu@...sung.com>,
        Daniel Stone <daniel@...ishbar.org>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Christoph Hellwig <hch@...radead.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Maciej Kwapulinski <maciej.kwapulinski@...ux.intel.com>
Subject: Re: [RFC PATCH v2 3/3] drm: initialize accel framework

On Wed, Nov 2, 2022 at 11:30 PM Jeffrey Hugo <quic_jhugo@...cinc.com> wrote:
>
> On 11/2/2022 2:34 PM, Oded Gabbay wrote:
> > @@ -163,7 +174,11 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> >
> >       ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> >       if (ret) {
> > -             DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > +             if (minor->type == DRM_MINOR_ACCEL)
> > +                     DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/accel.\n");
> > +             else
> > +                     DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > +
> >               goto err_debugfs;
> >       }
> >
>
> This doesn't look right.  Don't you need to call drm_debugfs_init() with
> accel_debugfs_root for the case - minor->type == DRM_MINOR_ACCEL?
> Unless I fail to understand something, this will put all the accel
> devices under /sys/kernel/debug/dri
ofc, you are correct.
Will be fixed in v3.
Thanks,
Oded