Re: [PATCH] drm/atomic: Call ww_acquire_done after drm_modeset_lock_all

[Maarten Lankhorst <maarten.lankhorst@linux.intel.com>]

Op 21-02-18 om 20:39 schreef Harry Wentland:
> On 2018-02-21 01:36 PM, Daniel Vetter wrote:
>> On Wed, Feb 21, 2018 at 04:23:31PM +0100, Maarten Lankhorst wrote:
>>> After we acquired all generic modeset locks in drm_modeset_lock_all, it's
>>> unsafe acquire any other so just mark acquisition as done.
>>>
>>> Atomic drivers shouldn't use drm_modeset_lock_all.
>>>
>>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>>
>> Also, I'm pretty much expecting to regret this like all the other
>> ww_acquire_done patches I've acked, but where's the fun in not trying :-)
>>
> This shouldn't really hurt anything, other than throw DEBUG warnings if DEBUG_MUTEXES is on.
>
> Acked-by: Harry Wentland <harry.wentland@amd.com>
>
> Harry
>
>> Cheers, Daniel
>>
>>> ---
>>>  drivers/gpu/drm/drm_modeset_lock.c | 1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c
>>> index 963e23db0fe7..8a5100685875 100644
>>> --- a/drivers/gpu/drm/drm_modeset_lock.c
>>> +++ b/drivers/gpu/drm/drm_modeset_lock.c
>>> @@ -113,6 +113,7 @@ void drm_modeset_lock_all(struct drm_device *dev)
>>>  		kfree(ctx);
>>>  		return;
>>>  	}
>>> +	ww_acquire_done(&ctx->ww_ctx);
>>>  
>>>  	WARN_ON(config->acquire_ctx);
>>>  
>>> -- 
>>> 2.16.1
>>>
>>> _______________________________________________
>>> Intel-gfx mailing list
>>> Intel-gfx@lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

Thanks, pushed.

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