Re: [PATCH v8 5/5] drm/i915/hotplug: avoid HPD polling if the device is PME capable

["Hogander, Jouni" <jouni.hogander@intel.com>]

On Tue, 2026-09-15 at 12:25 +0300, Vinod Govindapillai wrote:
> In supported devices, HPDs can generate PME and which in turn
> can invoke runtime resume calls for xe. No need to keep the
> HPD polling in such PME capable devices.
> 
> v2: use intel_display_rpm_pme_enabled() directly (JaniN)
> 
> Bspec: 52979, 52980, 68857, 68867, 68970
> Assisted-by: GitHub_Copilot:claude-opus-5
> Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>

Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_hotplug.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c
> b/drivers/gpu/drm/i915/display/intel_hotplug.c
> index 970aa95ee344..d095eb13dc06 100644
> --- a/drivers/gpu/drm/i915/display/intel_hotplug.c
> +++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
> @@ -867,6 +867,11 @@ void intel_hpd_poll_enable(struct intel_display
> *display)
>  	if (!HAS_DISPLAY(display) ||
> !intel_display_device_enabled(display))
>  		return;
>  
> +	if (intel_display_rpm_pme_enabled(display)) {
> +		drm_dbg_kms(display->drm, "PME wake capable device,
> skipping HPD polling.\n");
> +		return;
> +	}
> +
>  	WRITE_ONCE(display->hotplug.poll_enabled, true);
>  
>  	/*