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authorDavid Milburn <dmilburn@redhat.com>2010-09-03 17:13:03 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-10-07 17:06:03 -0500
commitf0ad30d3d2dc924decc0e10b1ff6dc32525a5d99 (patch)
tree6444b24afcb1c4a15c98de738d912698bab6a93a /drivers/scsi/libsas
parent045d3fe766b01921e24e2d4178e011b3b09ad4d6 (diff)
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[SCSI] libsas: fix NCQ mixing with non-NCQ
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 Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libsas')
-rw-r--r--drivers/scsi/libsas/sas_ata.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 042153c..ddbade7 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -347,6 +347,7 @@ static int sas_ata_scr_read(struct ata_link *link, unsigned int sc_reg_in,
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,