sata_mv Ignore response status LSB on NCQ.
The lower 8 bits of response status are not valid for NCQ.
Signed-off-by: Mark Lord <mlord@xxxxxxxxx>
--- old/drivers/ata/sata_mv.c 2008-01-24 12:35:14.000000000 -0500
+++ new/drivers/ata/sata_mv.c 2008-01-24 12:35:43.000000000 -0500
@@ -1587,13 +1587,12 @@
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;
}
-
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