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usb: dwc3: gadget: Refactor dwc3_gadget_ep_dequeue

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The flow from function dwc3_gadget_ep_dequeue() is not easy to follow.
Refactor it for easier read. No functional change in this commit.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Thinh Nguyen 2020-03-05 13:24:20 -08:00 committed by Felipe Balbi
parent 8411993e79
commit fcd2def663
1 changed files with 11 additions and 16 deletions
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27
drivers/usb/dwc3/gadget.c
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@ -1562,19 +1562,17 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
list_for_each_entry(r, &dep->cancelled_list, list) {
if (r == req)
goto out0;
goto out;
}
list_for_each_entry(r, &dep->pending_list, list) {
if (r == req)
break;
if (r == req) {
dwc3_gadget_giveback(dep, req, -ECONNRESET);
goto out;
}
}
if (r != req) {
list_for_each_entry(r, &dep->started_list, list) {
if (r == req)
break;
}
list_for_each_entry(r, &dep->started_list, list) {
if (r == req) {
struct dwc3_request *t;
@ -1588,17 +1586,14 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,
list_for_each_entry_safe(r, t, &dep->started_list, list)
dwc3_gadget_move_cancelled_request(r);
goto out0;
goto out;
}
dev_err(dwc->dev, "request %pK was not queued to %s\n",
request, ep->name);
ret = -EINVAL;
goto out0;
}
dwc3_gadget_giveback(dep, req, -ECONNRESET);
out0:
dev_err(dwc->dev, "request %pK was not queued to %s\n",
request, ep->name);
ret = -EINVAL;
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;