libata: Fix retrieving of active qcs

[linux-2.6-microblaze.git] / drivers / ata / libata-core.c

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index e9017c5..6f4ab5c 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5328,6 +5328,30 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
        }
 }
 
+/**
+ *     ata_qc_get_active - get bitmask of active qcs
+ *     @ap: port in question
+ *
+ *     LOCKING:
+ *     spin_lock_irqsave(host lock)
+ *
+ *     RETURNS:
+ *     Bitmask of active qcs
+ */
+u64 ata_qc_get_active(struct ata_port *ap)
+{
+       u64 qc_active = ap->qc_active;
+
+       /* ATA_TAG_INTERNAL is sent to hw as tag 0 */
+       if (qc_active & (1ULL << ATA_TAG_INTERNAL)) {
+               qc_active |= (1 << 0);
+               qc_active &= ~(1ULL << ATA_TAG_INTERNAL);
+       }
+
+       return qc_active;
+}
+EXPORT_SYMBOL_GPL(ata_qc_get_active);
+
 /**
  *     ata_qc_complete_multiple - Complete multiple qcs successfully
  *     @ap: port in question