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usb: dwc3: gadget: introduce cancelled_list

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commit d5443bbf5f 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: Felipe Balbi <felipe.balbi@linux.intel.com>
(cherry picked from commit d5443bbf5f)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felipe Balbi
2019-06-28 18:24:10 +00:00
committed by Greg Kroah-Hartman
parent 65e1f34031
commit bba5f9878f
3 changed files with 18 additions and 0 deletions
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2
drivers/usb/dwc3/core.h
View File

@@ -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;

1
drivers/usb/dwc3/gadget.c
View File

@@ -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;
}

15
drivers/usb/dwc3/gadget.h
View File

@@ -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);