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usb: gadget: net2280: Fix net2280_dequeue()

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[ Upstream commit f1d3fba17c ]

When a request must be dequeued with net2280_dequeue() e.g. due
to a device clear action and the same request is finished by the
function scan_dma_completions() then the function net2280_dequeue()
does not find the request in the following search loop and
returns the error -EINVAL without restoring the status ep->stopped.
Thus the endpoint keeps blocked and does not receive any data
anymore.
This fix restores the status and does not issue an error message.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
This commit is contained in:
Guido Kiener
2019-03-18 09:18:33 +01:00
committed by Greg Kroah-Hartman
parent 346eab0d15
commit edaebfe772
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/gadget/udc/net2280.c
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@@ -1273,9 +1273,9 @@ static int net2280_dequeue(struct usb_ep *_ep, struct usb_request *_req)
break;
}
if (&req->req != _req) {
ep->stopped = stopped;
spin_unlock_irqrestore(&ep->dev->lock, flags);
dev_err(&ep->dev->pdev->dev, "%s: Request mismatch\n",
__func__);
ep_dbg(ep->dev, "%s: Request mismatch\n", __func__);
return -EINVAL;
}