usb: dwc3: gadget: make DWC3_EP_WEDGE do the right thing

This makes DWC3_EP_WEDGE do the right thing, which is
prevent DWC3_EP_WEDGE from ever being cleared by a
ClearFeature(HALT) command.

[ balbi@ti.com : allowed set_wedge to send SetHalt command
	to controller ]

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index fd5d2bd9b7ef..16f2ba614fc0 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -894,6 +894,9 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value)
                 else
                         dep->flags |= DWC3_EP_STALL;
         } else {
+                if (dep->flags & DWC3_EP_WEDGE)
+                        return 0;
+
                 ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
                         DWC3_DEPCMD_CLEARSTALL, &params);
                 if (ret)
@@ -903,6 +906,7 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value)
                 else
                         dep->flags &= ~DWC3_EP_STALL;
         }
+
         return ret;
 }
 
@@ -936,7 +940,7 @@ static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep)
 
         dep->flags |= DWC3_EP_WEDGE;
 
-        return usb_ep_set_halt(ep);
+        return dwc3_gadget_ep_set_halt(ep, 1);
 }
 
 /* -------------------------------------------------------------------------- */