From 858f1299fd6f7518ddef19ddd304c8398ac79fa5 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sat, 11 Jul 2020 21:32:36 +0100 Subject: drm/i915/gt: Ignore irq enabling on the virtual engines We do not use the virtual engines for interrupts (they have physical components), but we do use them to decouple the fence signaling during submission. Currently, when we submit a completed request, we try to enable the interrupt handler for the virtual engine, but we never disarm it. A quick fix is then to mark the irq as enabled, and it will then remain enabled -- and this prevents us from waking the device and never letting it sleep again. Fixes: f8db4d051b5e ("drm/i915: Initialise breadcrumb lists on the virtual engine") Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Tvrtko Ursulin Cc: # v5.5+ Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20200711203236.12330-1-chris@chris-wilson.co.uk (cherry picked from commit 4fe6abb8f51355224808ab02a9febf65d184c40b) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/gt/intel_lrc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 7c3d8ef4a47c..d270d2db6f0a 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -5688,6 +5688,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings, intel_engine_init_active(&ve->base, ENGINE_VIRTUAL); intel_engine_init_breadcrumbs(&ve->base); intel_engine_init_execlists(&ve->base); + ve->base.breadcrumbs.irq_armed = true; /* fake HW, used for irq_work */ ve->base.cops = &virtual_context_ops; ve->base.request_alloc = execlists_request_alloc; -- cgit v1.2.3