提交 c68ce699 编写于 作者: C Chris Wilson

drm/i915: Assert we do not try to wait on an invalid seqno

We should never insert the invalid seqno into the wait tree, so assert
we do not.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NMichał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180102192500.20364-1-chris@chris-wilson.co.uk
上级 6f25d0be
...@@ -396,6 +396,8 @@ static bool __intel_engine_add_wait(struct intel_engine_cs *engine, ...@@ -396,6 +396,8 @@ static bool __intel_engine_add_wait(struct intel_engine_cs *engine,
bool first, armed; bool first, armed;
u32 seqno; u32 seqno;
GEM_BUG_ON(!wait->seqno);
/* Insert the request into the retirement ordered list /* Insert the request into the retirement ordered list
* of waiters by walking the rbtree. If we are the oldest * of waiters by walking the rbtree. If we are the oldest
* seqno in the tree (the first to be retired), then * seqno in the tree (the first to be retired), then
......
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