usb: dwc3: Update dwc3 udc to use usb_endpoint_descriptor inside the struct usb_ep

Remove redundant pointer to struct usb_endpoint_descriptor.

Signed-off-by: Ido Shayevitz <idos@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

3 files changed, 19 insertions, 21 deletions

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 6c7945b4cad3..9c5c73aae4f4 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -361,7 +361,6 @@ struct dwc3_ep {
         dma_addr_t              trb_pool_dma;
         u32                     free_slot;
         u32                     busy_slot;
-        const struct usb_endpoint_descriptor *desc;
         const struct usb_ss_ep_comp_descriptor *comp_desc;
         struct dwc3             *dwc;
 
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 3584a169886f..3453ca1f7479 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -179,7 +179,7 @@ int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
         int                             ret;
 
         spin_lock_irqsave(&dwc->lock, flags);
-        if (!dep->desc) {
+        if (!dep->endpoint.desc) {
                 dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
                                 request, dep->name);
                 ret = -ESHUTDOWN;
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 5255fe975ea1..561625a1284d 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -178,8 +178,8 @@ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc)
                 if (!(dep->flags & DWC3_EP_ENABLED))
                         continue;
 
-                if (usb_endpoint_xfer_bulk(dep->desc)
-                                || usb_endpoint_xfer_isoc(dep->desc))
+                if (usb_endpoint_xfer_bulk(dep->endpoint.desc)
+                                || usb_endpoint_xfer_isoc(dep->endpoint.desc))
                         mult = 3;
 
                 /*
@@ -229,7 +229,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
                  * completed (not the LINK TRB).
                  */
                 if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) &&
-                                usb_endpoint_xfer_isoc(dep->desc))
+                                usb_endpoint_xfer_isoc(dep->endpoint.desc))
                         dep->busy_slot++;
         }
         list_del(&req->list);
@@ -470,7 +470,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
                 if (ret)
                         return ret;
 
-                dep->desc = desc;
+                dep->endpoint.desc = desc;
                 dep->comp_desc = comp_desc;
                 dep->type = usb_endpoint_type(desc);
                 dep->flags |= DWC3_EP_ENABLED;
@@ -533,7 +533,6 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
         dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
 
         dep->stream_capable = false;
-        dep->desc = NULL;
         dep->endpoint.desc = NULL;
         dep->comp_desc = NULL;
         dep->type = 0;
@@ -694,7 +693,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 
         /* Skip the LINK-TRB on ISOC */
         if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) &&
-                        usb_endpoint_xfer_isoc(dep->desc))
+                        usb_endpoint_xfer_isoc(dep->endpoint.desc))
                 return;
 
         if (!req->trb) {
@@ -707,7 +706,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
         trb->bpl = lower_32_bits(dma);
         trb->bph = upper_32_bits(dma);
 
-        switch (usb_endpoint_type(dep->desc)) {
+        switch (usb_endpoint_type(dep->endpoint.desc)) {
         case USB_ENDPOINT_XFER_CONTROL:
                 trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP;
                 break;
@@ -732,7 +731,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
                 BUG();
         }
 
-        if (usb_endpoint_xfer_isoc(dep->desc)) {
+        if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                 trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
                 trb->ctrl |= DWC3_TRB_CTRL_CSP;
         } else {
@@ -743,7 +742,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
                         trb->ctrl |= DWC3_TRB_CTRL_LST;
         }
 
-        if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
+        if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable)
                 trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id);
 
         trb->ctrl |= DWC3_TRB_CTRL_HWO;
@@ -771,7 +770,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
         trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK;
 
         /* Can't wrap around on a non-isoc EP since there's no link TRB */
-        if (!usb_endpoint_xfer_isoc(dep->desc)) {
+        if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                 max = DWC3_TRB_NUM - (dep->free_slot & DWC3_TRB_MASK);
                 if (trbs_left > max)
                         trbs_left = max;
@@ -797,7 +796,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
                  * processed from the first TRB until the last one. Since we
                  * don't wrap around we have to start at the beginning.
                  */
-                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                         dep->busy_slot = 1;
                         dep->free_slot = 1;
                 } else {
@@ -807,7 +806,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
         }
 
         /* The last TRB is a link TRB, not used for xfer */
-        if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->desc))
+        if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->endpoint.desc))
                 return;
 
         list_for_each_entry_safe(req, n, &dep->request_list, list) {
@@ -984,7 +983,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
                 int start_trans;
 
                 start_trans = 1;
-                if (usb_endpoint_xfer_isoc(dep->desc) &&
+                if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
                                 (dep->flags & DWC3_EP_BUSY))
                         start_trans = 0;
 
@@ -1011,7 +1010,7 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
 
         int                             ret;
 
-        if (!dep->desc) {
+        if (!dep->endpoint.desc) {
                 dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
                                 request, ep->name);
                 return -ESHUTDOWN;
@@ -1125,7 +1124,7 @@ static int dwc3_gadget_ep_set_halt(struct usb_ep *ep, int value)
 
         spin_lock_irqsave(&dwc->lock, flags);
 
-        if (usb_endpoint_xfer_isoc(dep->desc)) {
+        if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                 dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name);
                 ret = -EINVAL;
                 goto out;
@@ -1681,7 +1680,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
         case DWC3_DEPEVT_XFERCOMPLETE:
                 dep->res_trans_idx = 0;
 
-                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                         dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
                                         dep->name);
                         return;
@@ -1690,7 +1689,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
                 dwc3_endpoint_transfer_complete(dwc, dep, event, 1);
                 break;
         case DWC3_DEPEVT_XFERINPROGRESS:
-                if (!usb_endpoint_xfer_isoc(dep->desc)) {
+                if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                         dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n",
                                         dep->name);
                         return;
@@ -1699,7 +1698,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
                 dwc3_endpoint_transfer_complete(dwc, dep, event, 0);
                 break;
         case DWC3_DEPEVT_XFERNOTREADY:
-                if (usb_endpoint_xfer_isoc(dep->desc)) {
+                if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
                         dwc3_gadget_start_isoc(dwc, dep, event);
                 } else {
                         int ret;
@@ -1720,7 +1719,7 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 
                 break;
         case DWC3_DEPEVT_STREAMEVT:
-                if (!usb_endpoint_xfer_bulk(dep->desc)) {
+                if (!usb_endpoint_xfer_bulk(dep->endpoint.desc)) {
                         dev_err(dwc->dev, "Stream event for non-Bulk %s\n",
                                         dep->name);
                         return;