[PATCH] Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid"

[Felipe Balbi]

This reverts commit ffb80fc672c3a7b6afd0cefcb1524fb99917b2f3.

Turns out that commit is wrong. Host controllers are allowed to use
Clear Feature HALT as means to sync data toggle between host and
periperal.

Cc: <sta...@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.ba...@linux.intel.com>
---
 drivers/usb/dwc3/gadget.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 9faad896b3a1..9f92ee03dde7 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1470,9 +1470,6 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int 
value, int protocol)
                unsigned transfer_in_flight;
                unsigned started;
 
-               if (dep->flags & DWC3_EP_STALL)
-                       return 0;
-
                if (dep->number > 1)
                        trb = dwc3_ep_prev_trb(dep, dep->trb_enqueue);
                else
@@ -1494,8 +1491,6 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int 
value, int protocol)
                else
                        dep->flags |= DWC3_EP_STALL;
        } else {
-               if (!(dep->flags & DWC3_EP_STALL))
-                       return 0;
 
                ret = dwc3_send_clear_stall_ep_cmd(dep);
                if (ret)
-- 
2.19.1