usb: dwc3: gadget: remove allocated/queued request tracking

That has never proven useful in any way. Just remove it.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/core.h

@@ -639,8 +639,6 @@ struct dwc3_event_buffer {
  * @resource_index: Resource transfer index
  * @frame_number: set to the frame number we want this transfer to start (ISOC)
  * @interval: the interval on which the ISOC transfer is started
- * @allocated_requests: number of requests allocated
- * @queued_requests: number of requests queued for transfer
  * @name: a human readable name e.g. ep1out-bulk
  * @direction: true for TX, false for RX
  * @stream_capable: true when streams are enabled
@@ -688,8 +686,6 @@ struct dwc3_ep {
 	u8			number;
 	u8			type;
 	u8			resource_index;
-	u32			allocated_requests;
-	u32			queued_requests;
 	u32			frame_number;
 	u32			interval;
 

drivers/usb/dwc3/gadget.c

@@ -840,7 +840,7 @@ static int dwc3_gadget_ep_disable(struct usb_ep *ep)
 }
 
 static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
-	gfp_t gfp_flags)
+		gfp_t gfp_flags)
 {
 	struct dwc3_request		*req;
 	struct dwc3_ep			*dep = to_dwc3_ep(ep);
@@ -852,8 +852,6 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
 	req->epnum	= dep->number;
 	req->dep	= dep;
 
-	dep->allocated_requests++;
-
 	trace_dwc3_alloc_request(req);
 
 	return &req->request;
@@ -863,9 +861,7 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep,
 		struct usb_request *request)
 {
 	struct dwc3_request		*req = to_dwc3_request(request);
-	struct dwc3_ep			*dep = to_dwc3_ep(ep);
 
-	dep->allocated_requests--;
 	trace_dwc3_free_request(req);
 	kfree(req);
 }
@@ -1005,7 +1001,6 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 		dwc3_gadget_move_started_request(req);
 		req->trb = trb;
 		req->trb_dma = dwc3_trb_dma_offset(dep, trb);
-		dep->queued_requests++;
 	}
 
 	__dwc3_prepare_one_trb(dep, trb, dma, length, chain, node,
@@ -1258,7 +1253,6 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep)
 		 */
 		if (req->trb)
 			memset(req->trb, 0, sizeof(struct dwc3_trb));
-		dep->queued_requests--;
 		dwc3_gadget_del_and_unmap_request(dep, req, ret);
 		return ret;
 	}
@@ -1488,7 +1482,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
 
 out1:
 	/* giveback the request */
-	dep->queued_requests--;
+
 	dwc3_gadget_giveback(dep, req, -ECONNRESET);
 
 out0:
@@ -2248,7 +2242,7 @@ static void dwc3_gadget_free_endpoints(struct dwc3 *dwc)
 
 /* -------------------------------------------------------------------------- */
 
-static int dwc3_gadget_ep_reclaim_completed_trbs(struct dwc3 *dwc,
+static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3 *dwc,
 		struct dwc3_ep *dep, struct dwc3_request *req,
 		struct dwc3_trb *trb, const struct dwc3_event_depevt *event,
 		int status, int chain)
@@ -2259,9 +2253,6 @@ static int dwc3_gadget_ep_reclaim_completed_trbs(struct dwc3 *dwc,
 
 	dwc3_ep_inc_deq(dep);
 
-	if (req->trb == trb)
-		dep->queued_requests--;
-
 	trace_dwc3_complete_trb(dep, trb);
 
 	/*
@@ -2366,7 +2357,7 @@ static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
 				req->sg = sg_next(s);
 				req->num_pending_sgs--;
 
-				ret = dwc3_gadget_ep_reclaim_completed_trbs(dwc,
+				ret = dwc3_gadget_ep_reclaim_completed_trb(dwc,
 						dep, req, trb, event, status,
 						chain);
 				if (ret)
@@ -2374,13 +2365,13 @@ static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
 			}
 		} else {
 			trb = &dep->trb_pool[dep->trb_dequeue];
-			ret = dwc3_gadget_ep_reclaim_completed_trbs(dwc, dep,
+			ret = dwc3_gadget_ep_reclaim_completed_trb(dwc, dep,
 					req, trb, event, status, chain);
 		}
 
 		if (req->unaligned || req->zero) {
 			trb = &dep->trb_pool[dep->trb_dequeue];
-			ret = dwc3_gadget_ep_reclaim_completed_trbs(dwc, dep,
+			ret = dwc3_gadget_ep_reclaim_completed_trb(dwc, dep,
 					req, trb, event, status, false);
 			req->unaligned = false;
 			req->zero = false;

drivers/usb/dwc3/trace.h

@@ -230,17 +230,14 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
 	TP_fast_assign(
 		__assign_str(name, dep->name);
 		__entry->trb = trb;
-		__entry->allocated = dep->allocated_requests;
-		__entry->queued = dep->queued_requests;
 		__entry->bpl = trb->bpl;
 		__entry->bph = trb->bph;
 		__entry->size = trb->size;
 		__entry->ctrl = trb->ctrl;
 		__entry->type = usb_endpoint_type(dep->endpoint.desc);
 	),
-	TP_printk("%s: %d/%d trb %p buf %08x%08x size %s%d ctrl %08x (%c%c%c%c:%c%c:%s)",
-		__get_str(name), __entry->queued, __entry->allocated,
-		__entry->trb, __entry->bph, __entry->bpl,
+	TP_printk("%s: trb %p buf %08x%08x size %s%d ctrl %08x (%c%c%c%c:%c%c:%s)",
+		__get_str(name), __entry->trb, __entry->bph, __entry->bpl,
 		({char *s;
 		int pcm = ((__entry->size >> 24) & 3) + 1;
 		switch (__entry->type) {