[PATCH] amdgpu/dc: Fix double unlock in amdgpu_dm_commit_planes

[Harry Wentland]

On 2017-11-07 03:18 PM, Ernst Sjöstrand wrote:
> Reported by smartch:
> amdgpu_dm_commit_planes() error: double unlock 'spin_lock:&crtc->dev->event_lock'
> amdgpu_dm_commit_planes() error: double unlock 'irqsave:flags'
> 
> The error path doesn't return so we only need a single unlock.
> 
> Signed-off-by: Ernst Sjöstrand <ernstp at gmail.com>

Reviewed-by: Harry Wentland <harry.wentland at amd.com>

Harry

> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 2ba5d9bddd6f..86c39fc68b2f 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -3928,7 +3928,6 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
>  			DRM_ERROR("%s: acrtc %d, already busy\n",
>  				  __func__,
>  				  acrtc_attach->crtc_id);
> -			spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
>  			/* In commit tail framework this cannot happen */
>  			WARN_ON(1);
>  		}
>