Stop assuming we only get called with irqs-on for disarming the
breadcrumbs, and do a full save/restore spin_lock_irq.

Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_breadcrumbs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c 
b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
index 15bbdd8c7552..2bc9c460e78d 100644
--- a/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
+++ b/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c
@@ -67,14 +67,15 @@ static void __intel_breadcrumbs_disarm_irq(struct 
intel_breadcrumbs *b)
 void intel_engine_disarm_breadcrumbs(struct intel_engine_cs *engine)
 {
        struct intel_breadcrumbs *b = &engine->breadcrumbs;
+       unsigned long flags;
 
        if (!b->irq_armed)
                return;
 
-       spin_lock_irq(&b->irq_lock);
+       spin_lock_irqsave(&b->irq_lock, flags);
        if (b->irq_armed)
                __intel_breadcrumbs_disarm_irq(b);
-       spin_unlock_irq(&b->irq_lock);
+       spin_unlock_irqrestore(&b->irq_lock, flags);
 }
 
 static inline bool __request_completed(const struct i915_request *rq)
-- 
2.23.0.rc1

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