From 4ebc65092ca3d9713d48ea43e7db5b3f07faf1bc Mon Sep 17 00:00:00 2001 From: Dhinakaran Pandiyan Date: Fri, 8 Sep 2017 17:42:55 -0700 Subject: [PATCH] drm/i915/spt+: Don't reset invalid AUX channel interrupt bits in SDEIMR The SDE interrupt bits 25, 26 and 27 are either reserved or meant for DDI E hotplug in SPT+. These bits are meant for AUX channels only in LPT and CPT, so add the appropriate checks. Signed-off-by: Dhinakaran Pandiyan Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20170909004255.14827-1-dhinakaran.pandiyan@intel.com --- drivers/gpu/drm/i915/i915_irq.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 5d391e689070..91a2c5dbf2da 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -3241,8 +3241,10 @@ static void ibx_irq_postinstall(struct drm_device *dev) if (HAS_PCH_IBX(dev_priv)) mask = SDE_GMBUS | SDE_AUX_MASK | SDE_POISON; - else + else if (HAS_PCH_CPT(dev_priv) || HAS_PCH_LPT(dev_priv)) mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT; + else + mask = SDE_GMBUS_CPT; gen5_assert_iir_is_zero(dev_priv, SDEIIR); I915_WRITE(SDEIMR, ~mask); -- 2.30.2