[Intel-gfx] [PATCH] drm/i915/psr: Fix warning in intel_psr_activate()

[Rodrigo Vivi]

On Mon, Jun 18, 2018 at 03:02:07PM -0700, Dhinakaran Pandiyan wrote:
> commit 5422b37c907e ("drm/i915/psr: Kill delays when activating psr
> back.") removed the call to cancel a scheduled psr_work from
> psr_disable() and instead added an early return in the work function. But,
> if the scheduled work item is executed after psr_enable(), we end up
> printing warnings as PSR is already enabled and active. So, put the
> cancel_work call back in psr_disable().
> 
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: José Roberto de Souza <jose.souza at intel.com>
> Fixes: 5422b37c907e ("drm/i915/psr: Kill delays when activating psr back.")
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106948
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

sorry and thanks for fixing it.

> ---
>  drivers/gpu/drm/i915/intel_psr.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index ef0f4741a95d..d4cd19fea148 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -754,6 +754,7 @@ void intel_psr_disable(struct intel_dp *intel_dp,
>  
>  	dev_priv->psr.enabled = NULL;
>  	mutex_unlock(&dev_priv->psr.lock);
> +	cancel_work_sync(&dev_priv->psr.work);
>  }
>  
>  static bool psr_wait_for_idle(struct drm_i915_private *dev_priv)
> -- 
> 2.14.1
>