Define the NCQ NON DATA command and update libsas to handle it
correctly.
Signed-off-by: NHannes Reinecke <hare@suse.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

Add some tracepoints for ata_qc_issue, ata_qc_complete, and
ata_eh_link_autopsy.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NTejun Heo <tj@kernel.org>