[PATCH] drm/dp-mst: Drop connection_mutex check

[PATCH] drm/dp-mst: Drop connection_mutex check

[Daniel Vetter]

Private atomic objects have grown their own locking with

commit b962a12050a387e4bbf3a48745afe1d29d396b0d
Author: Rob Clark <robdclark@gmail.com>
Date:   Mon Oct 22 14:31:22 2018 +0200

    drm/atomic: integrate modeset lock with private objects

which means we're no longer relying on connection_mutex for mst state
locking needs.

Cc: Lyude Paul <lyude@redhat.com>
Cc: Sean Paul <sean@poorly.run>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 6b14b63b8d62..9364e4f42975 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -4186,7 +4186,6 @@ struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_a
 {
 	struct drm_device *dev = mgr->dev;
 
-	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
 	return to_dp_mst_topology_state(drm_atomic_get_private_obj_state(state, &mgr->base));
 }
 EXPORT_SYMBOL(drm_atomic_get_mst_topology_state);
-- 
2.23.0

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Re: [PATCH] drm/dp-mst: Drop connection_mutex check

[Lyude Paul]

oh, completely forgot about this one

Reviewed-by: Lyude Paul <lyude@redhat.com>

On Thu, 2019-10-10 at 00:41 +0200, Daniel Vetter wrote:
> Private atomic objects have grown their own locking with
> 
> commit b962a12050a387e4bbf3a48745afe1d29d396b0d
> Author: Rob Clark <robdclark@gmail.com>
> Date:   Mon Oct 22 14:31:22 2018 +0200
> 
>     drm/atomic: integrate modeset lock with private objects
> 
> which means we're no longer relying on connection_mutex for mst state
> locking needs.
> 
> Cc: Lyude Paul <lyude@redhat.com>
> Cc: Sean Paul <sean@poorly.run>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
>  drivers/gpu/drm/drm_dp_mst_topology.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> b/drivers/gpu/drm/drm_dp_mst_topology.c
> index 6b14b63b8d62..9364e4f42975 100644
> --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> @@ -4186,7 +4186,6 @@ struct drm_dp_mst_topology_state
> *drm_atomic_get_mst_topology_state(struct drm_a
>  {
>  	struct drm_device *dev = mgr->dev;
>  
> -	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
>  	return
> to_dp_mst_topology_state(drm_atomic_get_private_obj_state(state, &mgr-
> >base));
>  }
>  EXPORT_SYMBOL(drm_atomic_get_mst_topology_state);
-- 
Cheers,
	Lyude Paul

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Re: [PATCH] drm/dp-mst: Drop connection_mutex check

[Daniel Vetter]

On Wed, Oct 09, 2019 at 06:46:38PM -0400, Lyude Paul wrote:
> oh, completely forgot about this one
> 
> Reviewed-by: Lyude Paul <lyude@redhat.com>

Thanks for your review, applied to drm-misc-next.
-Daniel
> 
> On Thu, 2019-10-10 at 00:41 +0200, Daniel Vetter wrote:
> > Private atomic objects have grown their own locking with
> > 
> > commit b962a12050a387e4bbf3a48745afe1d29d396b0d
> > Author: Rob Clark <robdclark@gmail.com>
> > Date:   Mon Oct 22 14:31:22 2018 +0200
> > 
> >     drm/atomic: integrate modeset lock with private objects
> > 
> > which means we're no longer relying on connection_mutex for mst state
> > locking needs.
> > 
> > Cc: Lyude Paul <lyude@redhat.com>
> > Cc: Sean Paul <sean@poorly.run>
> > Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> > ---
> >  drivers/gpu/drm/drm_dp_mst_topology.c | 1 -
> >  1 file changed, 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
> > b/drivers/gpu/drm/drm_dp_mst_topology.c
> > index 6b14b63b8d62..9364e4f42975 100644
> > --- a/drivers/gpu/drm/drm_dp_mst_topology.c
> > +++ b/drivers/gpu/drm/drm_dp_mst_topology.c
> > @@ -4186,7 +4186,6 @@ struct drm_dp_mst_topology_state
> > *drm_atomic_get_mst_topology_state(struct drm_a
> >  {
> >  	struct drm_device *dev = mgr->dev;
> >  
> > -	WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
> >  	return
> > to_dp_mst_topology_state(drm_atomic_get_private_obj_state(state, &mgr-
> > >base));
> >  }
> >  EXPORT_SYMBOL(drm_atomic_get_mst_topology_state);
> -- 
> Cheers,
> 	Lyude Paul
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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