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path: root/drivers/gpu/drm/i915/intel_engine_cs.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
-rw-r--r--drivers/gpu/drm/i915/intel_engine_cs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 30035e59a784..a28e2a864cf1 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -405,6 +405,10 @@ static void intel_engine_init_execlist(struct intel_engine_cs *engine)
execlists->csb_use_mmio = csb_force_mmio(engine->i915);
+ execlists->port_mask = 1;
+ BUILD_BUG_ON_NOT_POWER_OF_2(execlists_num_ports(execlists));
+ GEM_BUG_ON(execlists_num_ports(execlists) > EXECLIST_MAX_PORTS);
+
execlists->queue = RB_ROOT;
execlists->first = NULL;
}