[PATCH 4/4] usb: xhci: Fix build warning

[Corentin Labbe]

This patch fix the following build warnings:
drivers/usb/host/xhci-ring.c:2011:20: warning: variable 'ep_ring' set but not used [-Wunused-but-set-variable]

Signed-off-by: Corentin Labbe <clabbe@xxxxxxxxxxxx>
---
 drivers/usb/host/xhci-ring.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 942eeb351a3a..27d657ec5ed5 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2004,7 +2004,6 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	struct xhci_virt_ep *ep, int *status)
 {
 	struct xhci_virt_device *xdev;
-	struct xhci_ring *ep_ring;
 	unsigned int slot_id;
 	int ep_index;
 	struct xhci_ep_ctx *ep_ctx;
@@ -2016,7 +2015,6 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags));
 	xdev = xhci->devs[slot_id];
 	ep_index = TRB_TO_EP_ID(le32_to_cpu(event->flags)) - 1;
-	ep_ring = xhci_dma_to_transfer_ring(ep, le64_to_cpu(event->buffer));
 	ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
 	trb_comp_code = GET_COMP_CODE(le32_to_cpu(event->transfer_len));
 	requested = td->urb->transfer_buffer_length;
-- 
2.13.6