[PATCH 2/2] drm/udl: Clear struct drm_connector_funcs.dpms

[Thomas Zimmermann]

Hi

Am 07.02.20 um 17:41 schrieb Daniel Vetter:
> On Fri, Feb 07, 2020 at 03:16:02PM +0100, Thomas Zimmermann wrote:
>> Atomic modesetting doesn't use struct drm_connector_funcs.dpms and
>> the set function, drm_helper_connector_dpms(), wouldn't support it
>> anyway. So keep the pointer to NULL.
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> 
> On both patches:
> 
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> 
> I just suggested a drm_mode_config_validate() to Ville in his patch
> series, which runs in drm_dev_register(). Maybe we could add a check for
> that for atomic drivers? It's a bit a game of whack-a-mole otherwise :-)

From the 'git grep' I'd say those where the only atomic drivers to set
the callback. The others where non-atomic ones. OTOH, I recently thought
on several occasions that this or that behaviour should be enforced at
least by WARN_ON.

Best regards
Thomas

> -Daniel
> 
>> ---
>>  drivers/gpu/drm/udl/udl_connector.c | 1 -
>>  1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
>> index e9671d38b4a0..0afdfb0d1fe1 100644
>> --- a/drivers/gpu/drm/udl/udl_connector.c
>> +++ b/drivers/gpu/drm/udl/udl_connector.c
>> @@ -109,7 +109,6 @@ static const struct drm_connector_helper_funcs udl_connector_helper_funcs = {
>>  };
>>  
>>  static const struct drm_connector_funcs udl_connector_funcs = {
>> -	.dpms = drm_helper_connector_dpms,
>>  	.reset = drm_atomic_helper_connector_reset,
>>  	.detect = udl_detect,
>>  	.fill_modes = drm_helper_probe_single_connector_modes,
>> -- 
>> 2.25.0
>>
> 

-- 
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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