usb: dwc3: correct set_halt implementation for ep0

set_halt for ep0 is called to stall a deferred control responses by the
gadget.  We already have a function to stall default control endpoint.
This patch points set_halt for ep0 to the already available function.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Michel Sanches <michel.sanches@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8244eb5..1315e78 100644 (file)
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -225,6 +225,16 @@ static void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
        dwc3_ep0_out_start(dwc);
 }
 
+int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value)
+{
+       struct dwc3_ep                  *dep = to_dwc3_ep(ep);
+       struct dwc3                     *dwc = dep->dwc;
+
+       dwc3_ep0_stall_and_restart(dwc);
+
+       return 0;
+}
+
 void dwc3_ep0_out_start(struct dwc3 *dwc)
 {
        int                             ret;

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index d98549a..13f257d 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1268,7 +1268,10 @@ static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep)
        dep->flags |= DWC3_EP_WEDGE;
        spin_unlock_irqrestore(&dwc->lock, flags);
 
-       return dwc3_gadget_ep_set_halt(ep, 1);
+       if (dep->number == 0 || dep->number == 1)
+               return dwc3_gadget_ep0_set_halt(ep, 1);
+       else
+               return dwc3_gadget_ep_set_halt(ep, 1);
 }
 
 /* -------------------------------------------------------------------------- */
@@ -1286,7 +1289,7 @@ static const struct usb_ep_ops dwc3_gadget_ep0_ops = {
        .free_request   = dwc3_gadget_ep_free_request,
        .queue          = dwc3_gadget_ep0_queue,
        .dequeue        = dwc3_gadget_ep_dequeue,
-       .set_halt       = dwc3_gadget_ep_set_halt,
+       .set_halt       = dwc3_gadget_ep0_set_halt,
        .set_wedge      = dwc3_gadget_ep_set_wedge,
 };
 

diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index 39ced0b..99e6d72 100644 (file)
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -111,6 +111,7 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
 void dwc3_ep0_interrupt(struct dwc3 *dwc,
                const struct dwc3_event_depevt *event);
 void dwc3_ep0_out_start(struct dwc3 *dwc);
+int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
                gfp_t gfp_flags);
 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);