From 2d0b66266a12577c28d54ea6fe8669241d8ced18 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sat, 11 Jul 2020 21:32:36 +0100 Subject: [PATCH] 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: eb85b42db546 ("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(+) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 7c3d8ef4a47ce..d270d2db6f0a8 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; -- 2.39.5