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| author | Mark Lord <liml@rtr.ca> | 2008-01-26 18:32:09 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-02-01 11:29:47 -0500 |
| commit | cb92441973ebd71d556fc7cdd9e597582327dd71 (patch) | |
| tree | 0e57ca3fbfaccd586f8bacd48a819305c805a1ac /drivers/ata/sata_mv.c | |
| parent | 8c0aeb4a483334613336ef895f34cecc0ecbbfa6 (diff) | |
| download | linux-cb92441973ebd71d556fc7cdd9e597582327dd71.tar.gz linux-cb92441973ebd71d556fc7cdd9e597582327dd71.tar.bz2 linux-cb92441973ebd71d556fc7cdd9e597582327dd71.zip | |
sata_mv ncq Ignore response status LSB on NCQ
The lower 8 bits of response status are not valid for NCQ.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/sata_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index c60255810e68..207c400c64df 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -1590,13 +1590,12 @@ static void mv_intr_edma(struct ata_port *ap) qc = ata_qc_from_tag(ap, tag); - /* lower 8 bits of status are EDMA_ERR_IRQ_CAUSE_OFS - * bits (WARNING: might not necessarily be associated - * with this command), which -should- be clear - * if all is well + /* For non-NCQ mode, the lower 8 bits of status + * are from EDMA_ERR_IRQ_CAUSE_OFS, + * which should be zero if all went well. */ status = le16_to_cpu(pp->crpb[out_index].flags); - if (unlikely(status & 0xff)) { + if ((status & 0xff) && !(pp->pp_flags & MV_PP_FLAG_NCQ_EN)) { mv_err_intr(ap, qc); return; } |