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Commit bba5f987 authored by Felipe Balbi's avatar Felipe Balbi Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: gadget: introduce cancelled_list 



commit d5443bbf5fc8f8389cce146b1fc2987cdd229d12 upstream

This list will host cancelled requests who still have TRBs being
processed.

Cc: Fei Yang <fei.yang@intel.com>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Felipe Balbi <balbi@kernel.org>
Cc: linux-usb@vger.kernel.org
Cc: stable@vger.kernel.org # 4.19.y
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
(cherry picked from commit d5443bbf5fc8f8389cce146b1fc2987cdd229d12)
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 65e1f340

drivers/usb/dwc3/core.h

+2 −0
Original line number Diff line number Diff line
@@ -636,6 +636,7 @@ struct dwc3_event_buffer { 
/**

 * struct dwc3_ep - device side endpoint representation

 * @endpoint: usb endpoint

 * @cancelled_list: list of cancelled requests for this endpoint

 * @pending_list: list of pending requests for this endpoint

 * @started_list: list of started requests on this endpoint

 * @wait_end_transfer: wait_queue_head_t for waiting on End Transfer complete
@@ -659,6 +660,7 @@ struct dwc3_event_buffer { 
 */

struct dwc3_ep {

	struct usb_ep		endpoint;

	struct list_head	cancelled_list;

	struct list_head	pending_list;

	struct list_head	started_list;

drivers/usb/dwc3/gadget.c

+1 −0
Original line number Diff line number Diff line
@@ -2144,6 +2144,7 @@ static int dwc3_gadget_init_endpoint(struct dwc3 *dwc, u8 epnum) 


	INIT_LIST_HEAD(&dep->pending_list);

	INIT_LIST_HEAD(&dep->started_list);

	INIT_LIST_HEAD(&dep->cancelled_list);



	return 0;

}

drivers/usb/dwc3/gadget.h

+15 −0
Original line number Diff line number Diff line
@@ -79,6 +79,21 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) 
	list_move_tail(&req->list, &dep->started_list);

}



/**

 * dwc3_gadget_move_cancelled_request - move @req to the cancelled_list

 * @req: the request to be moved

 *

 * Caller should take care of locking. This function will move @req from its

 * current list to the endpoint's cancelled_list.

 */

static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req)

{

	struct dwc3_ep		*dep = req->dep;



	req->started = false;

	list_move_tail(&req->list, &dep->cancelled_list);

}



void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,

		int status);