patches.renesas/0277-xhci-use-trb-helper-functions-when-possible.patch

From 411d7545e4cd57406461fad928dbf4fb266da044 Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@linux.intel.com>
Date: Fri, 11 Nov 2016 15:13:13 +0200
Subject: [PATCH 277/299] xhci: use trb helper functions when possible

Use the trb_is_link() and link_trb_toggles_cycle() helpers to
make the code more readable

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 3495e451d1375f74bd6f9ee851c740e2c96118ae)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 drivers/usb/host/xhci-ring.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -539,9 +539,8 @@ void xhci_find_new_dequeue_state(struct
 		if (new_deq == cur_td->last_trb)
 			td_last_trb_found = true;
 
-		if (cycle_found &&
-		    TRB_TYPE_LINK_LE32(new_deq->generic.field[3]) &&
-		    new_deq->generic.field[3] & cpu_to_le32(LINK_TOGGLE))
+		if (cycle_found && trb_is_link(new_deq) &&
+		    link_trb_toggles_cycle(new_deq))
 			state->new_cycle_state ^= 0x1;
 
 		next_trb(xhci, ep_ring, &new_seg, &new_deq);
@@ -585,7 +584,7 @@ static void td_to_noop(struct xhci_hcd *
 	for (cur_seg = cur_td->start_seg, cur_trb = cur_td->first_trb;
 			true;
 			next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
-		if (TRB_TYPE_LINK_LE32(cur_trb->generic.field[3])) {
+		if (trb_is_link(cur_trb)) {
 			/* Unchain any chained Link TRBs, but
 			 * leave the pointers intact.
 			 */
@@ -2139,7 +2138,7 @@ static int process_isoc_td(struct xhci_h
 		     cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
 		     next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
 			if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
-			    !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
+			    !trb_is_link(cur_trb))
 				len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
 		}
 		len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) -
@@ -2285,7 +2284,7 @@ static int process_bulk_intr_td(struct x
 				cur_trb != event_trb;
 				next_trb(xhci, ep_ring, &cur_seg, &cur_trb)) {
 			if (!TRB_TYPE_NOOP_LE32(cur_trb->generic.field[3]) &&
-			    !TRB_TYPE_LINK_LE32(cur_trb->generic.field[3]))
+			    !trb_is_link(cur_trb))
 				td->urb->actual_length +=
 					TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
 		}