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cafebf8653
q->first_to_kick is obsolete, and can be replaced by q->first_to_check. Both cursors start off at 0. Out of the three code paths that update first_to_check, the qdio_inspect_queue() path is irrelevant as it doesn't even touch first_to_kick anymore. This leaves us with the two tasklet-driven code paths. Here any update to first_to_check is followed by a call to qdio_kick_handler(), which advances first_to_kick by the same amount. So the two cursors will differ only for a tiny moment. Drivers have no way of deterministically observing this difference, and thus it doesn't matter which of the cursors we use for reporting an error to q->handler. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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