1 files changed, 21 insertions, 3 deletions

diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index 7be74314ee12..640b38fbd051 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -89,11 +89,16 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
                 QH_INFO3_TX_RATE_53_3
                 | QH_INFO3_TX_PWR(0) /* 0 == max power */
                 );
+
+        qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1);
 }
 
 /**
  * qset_clear - clear fields in a qset so it may be reinserted into a
- * schedule
+ * schedule.
+ *
+ * The sequence number and current window are not cleared (see
+ * qset_reset()).
  */
 void qset_clear(struct whc *whc, struct whc_qset *qset)
 {
@@ -101,9 +106,8 @@ void qset_clear(struct whc *whc, struct whc_qset *qset)
         qset->remove = 0;
 
         qset->qh.link = cpu_to_le32(QH_LINK_NTDS(8) | QH_LINK_T);
-        qset->qh.status = cpu_to_le16(QH_STATUS_ICUR(qset->td_start));
+        qset->qh.status = qset->qh.status & QH_STATUS_SEQ_MASK;
         qset->qh.err_count = 0;
-        qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1);
         qset->qh.scratch[0] = 0;
         qset->qh.scratch[1] = 0;
         qset->qh.scratch[2] = 0;
@@ -114,6 +118,20 @@ void qset_clear(struct whc *whc, struct whc_qset *qset)
 }
 
 /**
+ * qset_reset - reset endpoint state in a qset.
+ *
+ * Clears the sequence number and current window.  This qset must not
+ * be in the ASL or PZL.
+ */
+void qset_reset(struct whc *whc, struct whc_qset *qset)
+{
+        wait_for_completion(&qset->remove_complete);
+
+        qset->qh.status &= ~QH_STATUS_SEQ_MASK;
+        qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1);
+}
+
+/**
  * get_qset - get the qset for an async endpoint
  *
  * A new qset is created if one does not already exist.