[PATCH 1/2] usb: xhci: Remove unused parameters of next_trb()

[Michal Pecio <michal.pecio@gmail.com>]

The function has two parameters which it doesn't use and hasn't ever
used. One caller even puts NULL there, knowing it will work anyway.

Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
---
 drivers/usb/host/xhci-ring.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 4ea2c3e072a9..a3ffadf8e400 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -145,10 +145,8 @@ static void trb_to_noop(union xhci_trb *trb, u32 noop_type)
  * TRB is in a new segment.  This does not skip over link TRBs, and it does not
  * effect the ring dequeue or enqueue pointers.
  */
-static void next_trb(struct xhci_hcd *xhci,
-		struct xhci_ring *ring,
-		struct xhci_segment **seg,
-		union xhci_trb **trb)
+static void next_trb(struct xhci_segment **seg,
+			union xhci_trb **trb)
 {
 	if (trb_is_link(*trb) || last_trb_on_seg(*seg, *trb)) {
 		*seg = (*seg)->next;
@@ -446,9 +444,9 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags)
 	 * avoiding corrupting the command ring pointer in case the command ring
 	 * is stopped by the time the upper dword is written.
 	 */
-	next_trb(xhci, NULL, &new_seg, &new_deq);
+	next_trb(&new_seg, &new_deq);
 	if (trb_is_link(new_deq))
-		next_trb(xhci, NULL, &new_seg, &new_deq);
+		next_trb(&new_seg, &new_deq);
 
 	crcr = xhci_trb_virt_to_dma(new_seg, new_deq);
 	xhci_write_64(xhci, crcr | CMD_RING_ABORT, &xhci->op_regs->cmd_ring);
@@ -678,7 +676,7 @@ static int xhci_move_dequeue_past_td(struct xhci_hcd *xhci,
 		    link_trb_toggles_cycle(new_deq))
 			new_cycle ^= 0x1;
 
-		next_trb(xhci, ep_ring, &new_seg, &new_deq);
+		next_trb(&new_seg, &new_deq);
 
 		/* Search wrapped around, bail out */
 		if (new_deq == ep->ring->dequeue) {
@@ -756,7 +754,7 @@ static void td_to_noop(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
 		if (trb == td->last_trb)
 			break;
 
-		next_trb(xhci, ep_ring, &seg, &trb);
+		next_trb(&seg, &trb);
 	}
 }
 
@@ -2259,7 +2257,7 @@ static int sum_trb_lengths(struct xhci_hcd *xhci, struct xhci_ring *ring,
 	union xhci_trb *trb = ring->dequeue;
 	struct xhci_segment *seg = ring->deq_seg;
 
-	for (sum = 0; trb != stop_trb; next_trb(xhci, ring, &seg, &trb)) {
+	for (sum = 0; trb != stop_trb; next_trb(&seg, &trb)) {
 		if (!trb_is_noop(trb) && !trb_is_link(trb))
 			sum += TRB_LEN(le32_to_cpu(trb->generic.field[2]));
 	}
-- 
2.43.0