[PATCH 50/51] drm/udl: drop drm_driver.release hook

[Thomas Zimmermann]

Hi

Am 02.03.20 um 23:26 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.
> 
> 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.
> 
> v2: Use _fini, not _disable in unplug, motivated by discussions with
> Thomas. _disable/_enable are for suspend/resume.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>

Acked-by: Thomas Zimmermann <tzimmermann at suse.de>

> Cc: Dave Airlie <airlied at redhat.com>
> Cc: Sean Paul <sean at poorly.run>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Thomas Zimmermann <tzimmermann at suse.de>
> Cc: Emil Velikov <emil.l.velikov at gmail.com>
> Cc: Gerd Hoffmann <kraxel at redhat.com>
> Cc: "Noralf Trønnes" <noralf at tronnes.org>
> Cc: Sam Ravnborg <sam at ravnborg.org>
> Cc: Thomas Gleixner <tglx at linutronix.de>
> Cc: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/udl/udl_drv.c  |  8 +-------
>  drivers/gpu/drm/udl/udl_drv.h  |  1 -
>  drivers/gpu/drm/udl/udl_main.c | 10 ----------
>  3 files changed, 1 insertion(+), 18 deletions(-)
> 
> diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
> index b447fb053e78..1ce2d865c36d 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,
> @@ -120,7 +114,7 @@ static void udl_usb_disconnect(struct usb_interface *interface)
>  {
>  	struct drm_device *dev = usb_get_intfdata(interface);
>  
> -	drm_kms_helper_poll_disable(dev);
> +	drm_kms_helper_poll_fini(dev);
>  	udl_drop_usb(dev);
>  	drm_dev_unplug(dev);
>  	drm_dev_put(dev);
> 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

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