From 9c8fbeebad37d5af5bc38982d5739c4fdaf1151a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jouni=20H=C3=B6gander?= <jouni.hogander@intel.com>
Date: Fri, 10 Jun 2022 11:54:28 +0300
Subject: drm/i915: Do not start connector polling if display is disabled
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Git-commit: 04770b082e2a207804c633fbfd5efec28cbc5673
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
Currently we are starting connector polling if display is disabled
using disable_display module parameter. Polling is just returning
always "not connected" state. This can be optimized by not starting
polling at all.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220610085429.52935-3-jouni.hogander@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_hotplug.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index 8204126d17f9..5f8b4f481cff 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -668,7 +668,8 @@ static void i915_hpd_poll_init_work(struct work_struct *work)
*/
void intel_hpd_poll_enable(struct drm_i915_private *dev_priv)
{
- if (!HAS_DISPLAY(dev_priv))
+ if (!HAS_DISPLAY(dev_priv) ||
+ !INTEL_DISPLAY_ENABLED(dev_priv))
return;
WRITE_ONCE(dev_priv->hotplug.poll_enabled, true);
--
2.38.1