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usb: dwc3: gadget: clear HWO when move req to pending list

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Clear the HWO of TRB belongs to the current req which will
be moved to the pending list, rather than clear the HWO
of previous TRB in the ring.

Fixes: 05c86e9eef ("usb: dwc3: gadget: fix bug of clac_trbs_left at isoc in transfer")
Signed-off-by: William Wu <william.wu@rock-chips.com>
Change-Id: If11c296db902631587cf36731242d12ddb5c4c28
This commit is contained in:
William Wu
2020-09-01 19:55:23 +08:00
parent 3b13f64c6d
commit c0c1270789
2 changed files with 3 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -2613,12 +2613,12 @@ static int dwc3_gadget_ep_cleanup_completed_request(struct dwc3_ep *dep,
*/
req->remaining = 0;
req->needs_extra_trb = false;
dwc3_gadget_move_queued_request(req);
if (req->trb)
usb_gadget_unmap_request_by_dev(dwc->sysdev,
&req->request,
req->direction);
req->trb = NULL;
dwc3_gadget_move_queued_request(req);
} else {
__dwc3_gadget_kick_transfer(dep);
}

9
drivers/usb/dwc3/gadget.h
View File

@@ -74,14 +74,9 @@ static inline struct dwc3_request *next_request(struct list_head *list)
static inline void dwc3_gadget_move_queued_request(struct dwc3_request *req)
{
struct dwc3_ep *dep = req->dep;
struct dwc3_trb *trb;
u8 tmp = dep->trb_enqueue;
if (!tmp)
tmp = DWC3_TRB_NUM - 1;
trb = &dep->trb_pool[tmp - 1];
trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
if (req->trb)
req->trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
req->status = DWC3_REQUEST_STATUS_QUEUED;
list_move_tail(&req->list, &dep->pending_list);
}