Commit 4635d3f2 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: ep0: drop dead code 



There's no such thing as XferNotReady(SETUP), we
can safely drop all that code with no problems
whatsoever.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent d9b33c60

drivers/usb/dwc3/core.h

+0 −2
Original line number Diff line number Diff line
@@ -457,7 +457,6 @@ enum dwc3_phy { 
enum dwc3_ep0_next {

	DWC3_EP0_UNKNOWN = 0,

	DWC3_EP0_COMPLETE,

	DWC3_EP0_NRDY_SETUP,

	DWC3_EP0_NRDY_DATA,

	DWC3_EP0_NRDY_STATUS,

};
@@ -779,7 +778,6 @@ struct dwc3_event_depevt { 
#define DEPEVT_STREAMEVT_NOTFOUND	2



/* Control-only Status */

#define DEPEVT_STATUS_CONTROL_SETUP	0

#define DEPEVT_STATUS_CONTROL_DATA	1

#define DEPEVT_STATUS_CONTROL_STATUS	2

drivers/usb/dwc3/ep0.c

+0 −49
Original line number Diff line number Diff line
@@ -809,12 +809,6 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, 
	}

}



static void dwc3_ep0_do_control_setup(struct dwc3 *dwc,

		const struct dwc3_event_depevt *event)

{

	dwc3_ep0_out_start(dwc);

}



static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,

		struct dwc3_ep *dep, struct dwc3_request *req)

{
@@ -926,50 +920,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc, 
{

	dwc->setup_packet_pending = true;



	/*

	 * This part is very tricky: If we have just handled

	 * XferNotReady(Setup) and we're now expecting a

	 * XferComplete but, instead, we receive another

	 * XferNotReady(Setup), we should STALL and restart

	 * the state machine.

	 *

	 * In all other cases, we just continue waiting

	 * for the XferComplete event.

	 *

	 * We are a little bit unsafe here because we're

	 * not trying to ensure that last event was, indeed,

	 * XferNotReady(Setup).

	 *

	 * Still, we don't expect any condition where that

	 * should happen and, even if it does, it would be

	 * another error condition.

	 */

	if (dwc->ep0_next_event == DWC3_EP0_COMPLETE) {

		switch (event->status) {

		case DEPEVT_STATUS_CONTROL_SETUP:

			dev_vdbg(dwc->dev, "Unexpected XferNotReady(Setup)\n");

			dwc3_ep0_stall_and_restart(dwc);

			break;

		case DEPEVT_STATUS_CONTROL_DATA:

			/* FALLTHROUGH */

		case DEPEVT_STATUS_CONTROL_STATUS:

			/* FALLTHROUGH */

		default:

			dev_vdbg(dwc->dev, "waiting for XferComplete\n");

		}



		return;

	}



	switch (event->status) {

	case DEPEVT_STATUS_CONTROL_SETUP:

		dev_vdbg(dwc->dev, "Control Setup\n");



		dwc->ep0state = EP0_SETUP_PHASE;



		dwc3_ep0_do_control_setup(dwc, event);

		break;



	case DEPEVT_STATUS_CONTROL_DATA:

		dev_vdbg(dwc->dev, "Control Data\n");