From a3005c2edf7e8c3478880db1ca84028a2b6819bb Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Fri, 12 Jun 2020 15:17:31 +0300
Subject: drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
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Git-commit: a3005c2edf7e8c3478880db1ca84028a2b6819bb
Patch-mainline: v5.8-rc2
References: bsc#1112178
Atm, hotplug interrupts on TypeC ports are left enabled after detecting
an interrupt storm, fix this.
Reported-by: Kunal Joshi <kunal1.joshi@intel.com>
References: https://gitlab.freedesktop.org/drm/intel/-/issues/351
Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/1964
Cc: Kunal Joshi <kunal1.joshi@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200612121731.19596-1-imre.deak@intel.com
(cherry picked from commit 587a87b9d7e94927edcdea018565bc1939381eb1)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/i915_irq.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 4dc601dffc08..284cf078135a 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3125,6 +3125,7 @@ static void gen11_hpd_irq_setup(struct drm_i915_private *dev_priv)
val = I915_READ(GEN11_DE_HPD_IMR);
val &= ~hotplug_irqs;
+ val |= ~enabled_irqs & hotplug_irqs;
I915_WRITE(GEN11_DE_HPD_IMR, val);
POSTING_READ(GEN11_DE_HPD_IMR);
--
2.27.0