usb: dwc3: ep0: drop dead code

There's no such thing as XferNotReady(SETUP), we
can safely drop all that code with no problems
whatsoever.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 49 deletions

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 28bce9be30bc..d4b38c72a0ac 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -809,12 +809,6 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
         }
 }
 
-static void dwc3_ep0_do_control_setup(struct dwc3 *dwc,
-                const struct dwc3_event_depevt *event)
-{
-        dwc3_ep0_out_start(dwc);
-}
-
 static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
                 struct dwc3_ep *dep, struct dwc3_request *req)
 {
@@ -926,50 +920,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
 {
         dwc->setup_packet_pending = true;
 
-        /*
-         * This part is very tricky: If we have just handled
-         * XferNotReady(Setup) and we're now expecting a
-         * XferComplete but, instead, we receive another
-         * XferNotReady(Setup), we should STALL and restart
-         * the state machine.
-         *
-         * In all other cases, we just continue waiting
-         * for the XferComplete event.
-         *
-         * We are a little bit unsafe here because we're
-         * not trying to ensure that last event was, indeed,
-         * XferNotReady(Setup).
-         *
-         * Still, we don't expect any condition where that
-         * should happen and, even if it does, it would be
-         * another error condition.
-         */
-        if (dwc->ep0_next_event == DWC3_EP0_COMPLETE) {
-                switch (event->status) {
-                case DEPEVT_STATUS_CONTROL_SETUP:
-                        dev_vdbg(dwc->dev, "Unexpected XferNotReady(Setup)\n");
-                        dwc3_ep0_stall_and_restart(dwc);
-                        break;
-                case DEPEVT_STATUS_CONTROL_DATA:
-                        /* FALLTHROUGH */
-                case DEPEVT_STATUS_CONTROL_STATUS:
-                        /* FALLTHROUGH */
-                default:
-                        dev_vdbg(dwc->dev, "waiting for XferComplete\n");
-                }
-
-                return;
-        }
-
         switch (event->status) {
-        case DEPEVT_STATUS_CONTROL_SETUP:
-                dev_vdbg(dwc->dev, "Control Setup\n");
-
-                dwc->ep0state = EP0_SETUP_PHASE;
-
-                dwc3_ep0_do_control_setup(dwc, event);
-                break;
-
         case DEPEVT_STATUS_CONTROL_DATA:
                 dev_vdbg(dwc->dev, "Control Data\n");