On Fri, Feb 28, 2020 at 8:44 AM Thomas Zimmermann <tzimmermann@xxxxxxx> wrote:
>
> Hi Daniel
>
> Am 27.02.20 um 19:15 schrieb Daniel Vetter:
> > There's only two functions called from that:
> > drm_kms_helper_poll_fini() and udl_free_urb_list(). Both of these are
> > also called from the ubs_driver->disconnect hook, so entirely
> > pointless to do the same again in the ->release hook.
>
> The disconnect hook calls drm_kms_helper_poll_disable() instead if
> _fini(). They are the same, except that _disable() does not clear
> dev->mode_config.poll_enabled to false. Is this OK?
oops, I overlooked that. But yeah for driver shutdown it's the same
really, we're not going to re-enable. _disable is meant for suspend so
youc an re-enable again on resume.
I'll augment the commit message on the next round to clarify that.
-Daniel
> Best regards
> Thomas
>
> >
> > Furthermore by the time we clean up the drm_driver we really shouldn't
> > be touching hardware anymore, so stopping the poll worker and freeing
> > the urb allocations in ->disconnect is the right thing to do.
> >
> > Now disconnect still cleans things up before unregistering the driver,
> > but that's a different issue.
> >
> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> > Cc: Dave Airlie <airlied@xxxxxxxxxx>
> > Cc: Sean Paul <sean@xxxxxxxxxx>
> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> > Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
> > Cc: Emil Velikov <emil.l.velikov@xxxxxxxxx>
> > Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>
> > Cc: "Noralf Trønnes" <noralf@xxxxxxxxxxx>
> > Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > Cc: Alex Deucher <alexander.deucher@xxxxxxx>
> > ---
> > drivers/gpu/drm/udl/udl_drv.c | 6 ------
> > drivers/gpu/drm/udl/udl_drv.h | 1 -
> > drivers/gpu/drm/udl/udl_main.c | 10 ----------
> > 3 files changed, 17 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
> > index b447fb053e78..7f140898df3e 100644
> > --- a/drivers/gpu/drm/udl/udl_drv.c
> > +++ b/drivers/gpu/drm/udl/udl_drv.c
> > @@ -34,14 +34,8 @@ static int udl_usb_resume(struct usb_interface *interface)
> >
> > DEFINE_DRM_GEM_FOPS(udl_driver_fops);
> >
> > -static void udl_driver_release(struct drm_device *dev)
> > -{
> > - udl_fini(dev);
> > -}
> > -
> > static struct drm_driver driver = {
> > .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
> > - .release = udl_driver_release,
> >
> > /* gem hooks */
> > .gem_create_object = udl_driver_gem_create_object,
> > diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
> > index 1de7eb1b6aac..2642f94a63fc 100644
> > --- a/drivers/gpu/drm/udl/udl_drv.h
> > +++ b/drivers/gpu/drm/udl/udl_drv.h
> > @@ -76,7 +76,6 @@ int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
> > void udl_urb_completion(struct urb *urb);
> >
> > int udl_init(struct udl_device *udl);
> > -void udl_fini(struct drm_device *dev);
> >
> > int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
> > const char *front, char **urb_buf_ptr,
> > diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
> > index 538718919916..f5d27f2a5654 100644
> > --- a/drivers/gpu/drm/udl/udl_main.c
> > +++ b/drivers/gpu/drm/udl/udl_main.c
> > @@ -351,13 +351,3 @@ int udl_drop_usb(struct drm_device *dev)
> > udl_free_urb_list(dev);
> > return 0;
> > }
> > -
> > -void udl_fini(struct drm_device *dev)
> > -{
> > - struct udl_device *udl = to_udl(dev);
> > -
> > - drm_kms_helper_poll_fini(dev);
> > -
> > - if (udl->urbs.count)
> > - udl_free_urb_list(dev);
> > -}
> >
>
> --
> Thomas Zimmermann
> Graphics Driver Developer
> SUSE Software Solutions Germany GmbH
> Maxfeldstr. 5, 90409 Nürnberg, Germany
> (HRB 36809, AG Nürnberg)
> Geschäftsführer: Felix Imendörffer
>
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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