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Add a note about scsipi_channel_thaw() and command ordering.

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bouyer 2001-05-23 15:56:48 +00:00
parent a98b728b88
commit 3ab3c1bb26
1 changed files with 7 additions and 2 deletions
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9
share/man/man9/scsipi.9
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@ -1,4 +1,4 @@
.\" $NetBSD: scsipi.9,v 1.1 2001/05/11 08:51:15 bouyer Exp $
.\" $NetBSD: scsipi.9,v 1.2 2001/05/23 15:56:48 bouyer Exp $
.\"
.\"
.\" Copyright (c) 2001 Manuel Bouyer.
@ -511,7 +511,12 @@ channel's freeze counter is increased by
.It Fn scsipi_channel_thaw "struct scsipi_channel *chan" "int count"
Decrement the channel's freeze counter by
.Fa count
and process the queue if the counter goes to 0.
and process the queue if the counter goes to 0. In order to preserve command
ordering, HBA drivers should not call
.Fn scsipi_channel_thaw
before calling
.Fn scsipi_done
for all commands in the HBA's queue which need to be requeued.
.It Fn scsipi_periph_timed_thaw "void *arg"
Call
.Fn scsipi_channel_thaw "arg" "1" .