patches.renesas/0211-xhci-Rename-variables-related-to-transfer-descritpor.patch

From fd64265d9c1d9b5d14252e1f15e7cfa9ce9c47cf Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@linux.intel.com>
Date: Mon, 23 Jan 2017 14:20:25 +0200
Subject: [PATCH 211/255] xhci: Rename variables related to transfer
 descritpors

urb_priv structure has a count on how many TDs the
URB contains, and how many of those TD's we have handled.

rename:
length -> num_tds
td_cnt -> num_tds_done

No functional changes

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 9ef7fbbb4fdfb857e606a9fd550faa8011cce5e2)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/usb/host/xhci-ring.c |   10 +++++-----
 drivers/usb/host/xhci.c      |   14 +++++++-------
 drivers/usb/host/xhci.h      |    4 ++--
 3 files changed, 14 insertions(+), 14 deletions(-)

--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -119,14 +119,14 @@ static bool last_td_in_urb(struct xhci_t
 {
 	struct urb_priv *urb_priv = td->urb->hcpriv;
 
-	return urb_priv->td_cnt == urb_priv->length;
+	return urb_priv->num_tds_done == urb_priv->num_tds;
 }
 
 static void inc_td_cnt(struct urb *urb)
 {
 	struct urb_priv *urb_priv = urb->hcpriv;
 
-	urb_priv->td_cnt++;
+	urb_priv->num_tds_done++;
 }
 
 static void trb_to_noop(union xhci_trb *trb, u32 noop_type)
@@ -2058,7 +2058,7 @@ static int process_isoc_td(struct xhci_h
 	ep_ring = xhci_dma_to_transfer_ring(ep, le64_to_cpu(event->buffer));
 	trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len));
 	urb_priv = td->urb->hcpriv;
-	idx = urb_priv->td_cnt;
+	idx = urb_priv->num_tds_done;
 	frame = &td->urb->iso_frame_desc[idx];
 	requested = frame->length;
 	remaining = EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
@@ -2137,7 +2137,7 @@ static int skip_isoc_td(struct xhci_hcd
 
 	ep_ring = xhci_dma_to_transfer_ring(ep, le64_to_cpu(event->buffer));
 	urb_priv = td->urb->hcpriv;
-	idx = urb_priv->td_cnt;
+	idx = urb_priv->num_tds_done;
 	frame = &td->urb->iso_frame_desc[idx];
 
 	/* The transfer is partly done. */
@@ -3134,7 +3134,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *
 	urb_priv = urb->hcpriv;
 
 	/* Deal with URB_ZERO_PACKET - need one more td/trb */
-	if (urb->transfer_flags & URB_ZERO_PACKET && urb_priv->length > 1)
+	if (urb->transfer_flags & URB_ZERO_PACKET && urb_priv->num_tds > 1)
 		need_zero_pkt = true;
 
 	td = urb_priv->td[0];
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1385,8 +1385,8 @@ int xhci_urb_enqueue(struct usb_hcd *hcd
 		buffer++;
 	}
 
-	urb_priv->length = num_tds;
-	urb_priv->td_cnt = 0;
+	urb_priv->num_tds = num_tds;
+	urb_priv->num_tds_done = 0;
 	urb->hcpriv = urb_priv;
 
 	trace_xhci_urb_enqueue(urb);
@@ -1529,8 +1529,8 @@ int xhci_urb_dequeue(struct usb_hcd *hcd
 		xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
 				"HW died, freeing TD.");
 		urb_priv = urb->hcpriv;
-		for (i = urb_priv->td_cnt;
-		     i < urb_priv->length && xhci->devs[urb->dev->slot_id];
+		for (i = urb_priv->num_tds_done;
+		     i < urb_priv->num_tds && xhci->devs[urb->dev->slot_id];
 		     i++) {
 			td = urb_priv->td[i];
 			if (!list_empty(&td->td_list))
@@ -1555,8 +1555,8 @@ int xhci_urb_dequeue(struct usb_hcd *hcd
 	}
 
 	urb_priv = urb->hcpriv;
-	i = urb_priv->td_cnt;
-	if (i < urb_priv->length)
+	i = urb_priv->num_tds_done;
+	if (i < urb_priv->num_tds)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
 				"Cancel URB %p, dev %s, ep 0x%x, "
 				"starting at offset 0x%llx",
@@ -1566,7 +1566,7 @@ int xhci_urb_dequeue(struct usb_hcd *hcd
 					urb_priv->td[i]->start_seg,
 					urb_priv->td[i]->first_trb));
 
-	for (; i < urb_priv->length; i++) {
+	for (; i < urb_priv->num_tds; i++) {
 		td = urb_priv->td[i];
 		list_add_tail(&td->cancelled_td_list, &ep->cancelled_td_list);
 	}
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1608,8 +1608,8 @@ struct xhci_scratchpad {
 };
 
 struct urb_priv {
-	int	length;
-	int	td_cnt;
+	int	num_tds;
+	int	num_tds_done;
 	struct	xhci_td	*td[0];
 };