Messages in this thread Patch in this message | | | Date | Fri, 19 Nov 2010 13:30:48 -0800 | From | Greg KH <> | Subject | [3/5] [SCSI] libsas: fix NCQ mixing with non-NCQ |
| |
2.6.27-stable review patch. If anyone has any objections, please let us know.
------------------
From: David Milburn <dmilburn@redhat.com>
commit f0ad30d3d2dc924decc0e10b1ff6dc32525a5d99 upstream.
Some cards (like mvsas) have issue troubles if non-NCQ commands are mixed with NCQ ones. Fix this by using the libata default NCQ check routine which waits until all NCQ commands are complete before issuing a non-NCQ one. The impact to cards (like aic94xx) which don't need this logic should be minimal
Signed-off-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/scsi/libsas/sas_ata.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -346,6 +346,7 @@ static int sas_ata_scr_read(struct ata_p static struct ata_port_operations sas_sata_ops = { .phy_reset = sas_ata_phy_reset, .post_internal_cmd = sas_ata_post_internal, + .qc_defer = ata_std_qc_defer, .qc_prep = ata_noop_qc_prep, .qc_issue = sas_ata_qc_issue, .qc_fill_rtf = sas_ata_qc_fill_rtf,
| |