Improve ata_reinit():

 - protect againtst recursions,
 - add new devices detection using ata_identify().

Improve ata_identify():
 - do not add duplicate device if device already exist.

Rework SATA hot-plug events handling. Instead of unsafe duplicate
implementation use common ata_reinit() to handle all state changes.

All together this gives quite stable and robust cold- and hot-plug operation,
invariant to false, lost and duplicate events.

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/dev/ata/ata-all.h b/sys/dev/ata/ata-all.h
index 4e47f82..a721d80 100644
--- a/sys/dev/ata/ata-all.h
+++ b/sys/dev/ata/ata-all.h
@@ -530,6 +530,7 @@ struct ata_channel {
     TAILQ_HEAD(, ata_request)   ata_queue;      /* head of ATA queue */
     struct ata_request          *freezepoint;   /* composite freezepoint */
     struct ata_request          *running;       /* currently running request */
+    struct task			conntask;	/* PHY events handling task */
 };
 
 /* disk bay/enclosure related */