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Commit 7a601300 authored by Carlos Pizano's avatar Carlos Pizano Committed by CQ bot account: commit-bot@chromium.org
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[zircon] fix to semaphore 

In my original impl I somehow only test for kill signal any other
signal will leave |count_| unbalanced and would cause threads to
get stuck in ports even if a packet was posted.

thanks to dje@ who found this bug.

TEST: new kernel test added "k ut semaphore". This also runs
in the bots in the "ut all" set.

ZX-3284 #comment done

Change-Id: Ica2395f37776e331a8a0da62b4a7170e60b39582
parent 2a2cd9f3
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