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FROMGIT: usb: dwc3: gadget: Return success always for kick transfer in ep queue

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If an error is received when issuing a start or update transfer
command, the error handler will stop all active requests (including
the current USB request), and call dwc3_gadget_giveback() to notify
function drivers of the requests which have been stopped.  Avoid
returning an error for kick transfer during EP queue, to remove
duplicate cleanup operations on the request being queued.

Fixes: 8d99087c2d ("usb: dwc3: gadget: Properly handle failed kick_transfer")
cc: stable@vger.kernel.org
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1620410119-24971-1-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 18ffa988db
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-linus)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I78dd14dab53a4e48ef2aaa16f16397ed2361f597
This commit is contained in:
Wesley Cheng 2021-05-07 10:55:19 -07:00 • committed by Greg Kroah-Hartman
commit e9c04db1d5
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/dwc3/gadget.c
View file

@ -1682,7 +1682,9 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
}
}
return __dwc3_gadget_kick_transfer(dep);
__dwc3_gadget_kick_transfer(dep);
return 0;
}
static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,