CVS commit: [jdolecek-ncq] src/sys/dev/ic

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

Module Name:    src
Committed By:   jdolecek
Date:           Sun Jul 23 14:14:44 UTC 2017

Modified Files:
        src/sys/dev/ic [jdolecek-ncq]: ahcisata_core.c

Log Message:
rework the error handling and recovery, so that errors during the recovery
are handled correctly, and the recovery more closely follows the spec

this fixes e.g. NCQ error handling under QEMU, which doesn't implement
READ LOG EXT - previous code actually made the call 'succeed', returning bogus
(zero) slot/error/status

finished xfers are still handled before entering recovery (with channel frozen)
to avoid unnecessary retries


To generate a diff of this commit:
cvs rdiff -u -r1.57.6.19 -r1.57.6.20 src/sys/dev/ic/ahcisata_core.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.