usb: dwc3: gadget: remove unnecessary 'dwc' parameter

Endpoint handlers need to know about endpoints, not dwc. If they
really need access to dwc (e.g. for printing error messages) we have a
reference to it tucked inside the endpoint.

This patch has no functional changes, it's simply moving things around.

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

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6876f36..127cb3e 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -703,12 +703,12 @@ out:
        return 0;
 }
 
-static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force);
+static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force);
 static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep)
 {
        struct dwc3_request             *req;
 
-       dwc3_stop_active_transfer(dwc, dep->number, true);
+       dwc3_stop_active_transfer(dep, true);
 
        /* - giveback all requests to gadget driver */
        while (!list_empty(&dep->started_list)) {
@@ -1275,11 +1275,10 @@ static int __dwc3_gadget_get_frame(struct dwc3 *dwc)
        return DWC3_DSTS_SOFFN(reg);
 }
 
-static void __dwc3_gadget_start_isoc(struct dwc3 *dwc,
-               struct dwc3_ep *dep, u32 cur_uf)
+static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep, u32 cur_uf)
 {
        if (list_empty(&dep->pending_list)) {
-               dev_info(dwc->dev, "%s: ran out of requests\n",
+               dev_info(dep->dwc->dev, "%s: ran out of requests\n",
                                dep->name);
                dep->flags |= DWC3_EP_PENDING_REQUEST;
                return;
@@ -1329,13 +1328,13 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
        if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                if ((dep->flags & DWC3_EP_PENDING_REQUEST)) {
                        if (dep->flags & DWC3_EP_TRANSFER_STARTED) {
-                               dwc3_stop_active_transfer(dwc, dep->number, true);
+                               dwc3_stop_active_transfer(dep, true);
                                dep->flags = DWC3_EP_ENABLED;
                        } else {
                                u32 cur_uf;
 
                                cur_uf = __dwc3_gadget_get_frame(dwc);
-                               __dwc3_gadget_start_isoc(dwc, dep, cur_uf);
+                               __dwc3_gadget_start_isoc(dep, cur_uf);
                                dep->flags &= ~DWC3_EP_PENDING_REQUEST;
                        }
                        return 0;
@@ -1398,7 +1397,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
                }
                if (r == req) {
                        /* wait until it is processed */
-                       dwc3_stop_active_transfer(dwc, dep->number, true);
+                       dwc3_stop_active_transfer(dep, true);
 
                        /*
                         * If request was already started, this means we had to
@@ -2231,10 +2230,9 @@ static void dwc3_gadget_free_endpoints(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)
+static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep,
+               struct dwc3_request *req, struct dwc3_trb *trb,
+               const struct dwc3_event_depevt *event, int status, int chain)
 {
        unsigned int            count;
        unsigned int            s_pkt = 0;
@@ -2294,7 +2292,7 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3 *dwc,
                                 */
                                dep->flags |= DWC3_EP_MISSED_ISOC;
                        } else {
-                               dev_err(dwc->dev, "incomplete IN transfer %s\n",
+                               dev_err(dep->dwc->dev, "incomplete IN transfer %s\n",
                                                dep->name);
                                status = -ECONNRESET;
                        }
@@ -2316,9 +2314,8 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3 *dwc,
        return 0;
 }
 
-static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
-               struct dwc3_ep *dep, const struct dwc3_event_depevt *event,
-               int status)
+static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3_ep *dep,
+               const struct dwc3_event_depevt *event, int status)
 {
        struct dwc3_request     *req, *n;
        struct dwc3_trb         *trb;
@@ -2346,22 +2343,22 @@ 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_trb(dwc,
-                                               dep, req, trb, event, status,
+                               ret = dwc3_gadget_ep_reclaim_completed_trb(dep,
+                                               req, trb, event, status,
                                                chain);
                                if (ret)
                                        break;
                        }
                } else {
                        trb = &dep->trb_pool[dep->trb_dequeue];
-                       ret = dwc3_gadget_ep_reclaim_completed_trb(dwc, dep,
-                                       req, trb, event, status, chain);
+                       ret = dwc3_gadget_ep_reclaim_completed_trb(dep, req,
+                                       trb, event, status, chain);
                }
 
                if (req->unaligned || req->zero) {
                        trb = &dep->trb_pool[dep->trb_dequeue];
-                       ret = dwc3_gadget_ep_reclaim_completed_trb(dwc, dep,
-                                       req, trb, event, status, false);
+                       ret = dwc3_gadget_ep_reclaim_completed_trb(dep, req,
+                                       trb, event, status, false);
                        req->unaligned = false;
                        req->zero = false;
                }
@@ -2375,7 +2372,7 @@ static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
                         * to kick transfer again if (req->num_pending_sgs > 0)
                         */
                        if (req->num_pending_sgs) {
-                               dev_WARN_ONCE(dwc->dev,
+                               dev_WARN_ONCE(dep->dwc->dev,
                                              (req->request.actual == length),
                                              "There are some pending sg's that needs to be queued again\n");
                                return __dwc3_gadget_kick_transfer(dep);
@@ -2411,7 +2408,7 @@ static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
                         */
                        dep->flags = DWC3_EP_PENDING_REQUEST;
                } else {
-                       dwc3_stop_active_transfer(dwc, dep->number, true);
+                       dwc3_stop_active_transfer(dep, true);
                        dep->flags = DWC3_EP_ENABLED;
                }
                return 1;
@@ -2423,16 +2420,17 @@ static int dwc3_gadget_ep_cleanup_completed_requests(struct dwc3 *dwc,
        return 1;
 }
 
-static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3 *dwc,
-               struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
+static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
+               const struct dwc3_event_depevt *event)
 {
+       struct dwc3             *dwc = dep->dwc;
        unsigned                status = 0;
        int                     clean_busy;
 
        if (event->status & DEPEVT_STATUS_BUSERR)
                status = -ECONNRESET;
 
-       clean_busy = dwc3_gadget_ep_cleanup_completed_requests(dwc, dep, event,
+       clean_busy = dwc3_gadget_ep_cleanup_completed_requests(dep, event,
                        status);
        if (clean_busy && (!dep->endpoint.desc ||
                                usb_endpoint_xfer_isoc(dep->endpoint.desc)))
@@ -2464,15 +2462,15 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3 *dwc,
        }
 }
 
-static void dwc3_gadget_endpoint_transfer_not_ready(struct dwc3 *dwc,
-               struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
+static void dwc3_gadget_endpoint_transfer_not_ready(struct dwc3_ep *dep,
+               const struct dwc3_event_depevt *event)
 {
        u32 cur_uf, mask;
 
        mask = ~(dep->interval - 1);
        cur_uf = event->parameters & mask;
 
-       __dwc3_gadget_start_isoc(dwc, dep, cur_uf);
+       __dwc3_gadget_start_isoc(dep, cur_uf);
 }
 
 static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
@@ -2500,10 +2498,10 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 
        switch (event->endpoint_event) {
        case DWC3_DEPEVT_XFERINPROGRESS:
-               dwc3_gadget_endpoint_transfer_in_progress(dwc, dep, event);
+               dwc3_gadget_endpoint_transfer_in_progress(dep, event);
                break;
        case DWC3_DEPEVT_XFERNOTREADY:
-               dwc3_gadget_endpoint_transfer_not_ready(dwc, dep, event);
+               dwc3_gadget_endpoint_transfer_not_ready(dep, event);
                break;
        case DWC3_DEPEVT_EPCMDCMPLT:
                cmd = DEPEVT_PARAMETER_CMD(event->parameters);
@@ -2559,15 +2557,13 @@ static void dwc3_reset_gadget(struct dwc3 *dwc)
        }
 }
 
-static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force)
+static void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force)
 {
-       struct dwc3_ep *dep;
+       struct dwc3 *dwc = dep->dwc;
        struct dwc3_gadget_ep_cmd_params params;
        u32 cmd;
        int ret;
 
-       dep = dwc->eps[epnum];
-
        if ((dep->flags & DWC3_EP_END_TRANSFER_PENDING) ||
            !dep->resource_index)
                return;