[Intel-gfx] [PATCH 2/2] drm/i915: Drop irqsave/restore for flip_done_handler()

[Murthy, Arun R]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Ville
> Syrjala
> Sent: Thursday, September 28, 2023 8:55 PM
> To: intel-gfx at lists.freedesktop.org
> Subject: [Intel-gfx] [PATCH 2/2] drm/i915: Drop irqsave/restore for
> flip_done_handler()
> 
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Since flip_done_handler() is always called from the irq handler we can skip the
> irqsave/restore dance.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy at intel.com>

Thanks and Regards,
Arun R Murthy
--------------------
> ---
>  drivers/gpu/drm/i915/display/intel_display_irq.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c
> b/drivers/gpu/drm/i915/display/intel_display_irq.c
> index d3df615f0e48..95e1bf5d8707 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_irq.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_irq.c
> @@ -340,17 +340,15 @@ static void flip_done_handler(struct
> drm_i915_private *i915,
>  			      enum pipe pipe)
>  {
>  	struct intel_crtc *crtc = intel_crtc_for_pipe(i915, pipe);
> -	struct drm_device *dev = &i915->drm;
> -	unsigned long irqflags;
> 
> -	spin_lock_irqsave(&dev->event_lock, irqflags);
> +	spin_lock(&i915->drm.event_lock);
> 
>  	if (crtc->flip_done_event) {
>  		drm_crtc_send_vblank_event(&crtc->base, crtc-
> >flip_done_event);
>  		crtc->flip_done_event = NULL;
>  	}
> 
> -	spin_unlock_irqrestore(&dev->event_lock, irqflags);
> +	spin_unlock(&i915->drm.event_lock);
>  }
> 
>  static void hsw_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
> --
> 2.41.0