I saw this and thought it was wrong.
int
i915_seqno_passed(uint32_t seq1, uint32_t seq2)
{
return (int32_t)(seq1 - seq2) >= 0;
After a bit of thinking I realized that this is doing modulas arithmetic to
deal with the seqno wrapping around. Given its not obvious at first glance
you might like to add a comment that to explain?
Barry
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