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usb: dwc3: drop EP0_STALL state

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Whenever we issue a Set Stall command on EP0,
the state machine will be restarted and Stall
is cleared automatically, when core receives
the next SETUP packet.

There's no need to track that EP0_STALL state.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2011-08-30 15:48:08 +03:00
parent 76cb323f80
commit 0b7836a9eb
3 changed files with 8 additions and 5 deletions
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1
drivers/usb/dwc3/core.h
View File

@ -375,7 +375,6 @@ enum dwc3_ep0_state {
EP0_SETUP_PHASE,
EP0_DATA_PHASE,
EP0_STATUS_PHASE,
EP0_STALL,
};
enum dwc3_link_state {

2
drivers/usb/dwc3/ep0.c
View File

@ -68,8 +68,6 @@ static const char *dwc3_ep0_state_string(enum dwc3_ep0_state state)
return "Data Phase";
case EP0_STATUS_PHASE:
return "Status Phase";
case EP0_STALL:
return "Stall";
default:
return "UNKNOWN";
}

10
drivers/usb/dwc3/gadget.c
View File

@ -872,8 +872,14 @@ int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value)
memset(&params, 0x00, sizeof(params));
if (value) {
if (dep->number == 0 || dep->number == 1)
dwc->ep0state = EP0_STALL;
if (dep->number == 0 || dep->number == 1) {
/*
* Whenever EP0 is stalled, we will restart
* the state machine, thus moving back to
* Setup Phase
*/
dwc->ep0state = EP0_SETUP_PHASE;
}
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
DWC3_DEPCMD_SETSTALL, &params);