forked from M-Labs/artiq
runtime/mailbox: fix mailbox_acknowledged for first message
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@ -51,7 +51,10 @@ void mailbox_send(void *ptr)
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int mailbox_acknowledged(void)
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{
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return KERNELCPU_MAILBOX != last_transmission;
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unsigned int m;
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m = KERNELCPU_MAILBOX;
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return !m || (m != last_transmission);
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}
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void mailbox_send_and_wait(void *ptr)
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