This fix handles two race conditions:- 1) Unlinking rx URBs during interface suspend races with completion of a rx urb, which may cause successful completion of an urb with actual data with a status of -ECONNRESET. Avoid this race by anchoring the urb while submission and unlink only anchored urbs during suspend. 2) Race between write and resume with the possibility of data write submitting urb immediately before the delayed urbs are played back during resume. This results in data written by tty driver getting submitted out of order to HSIC controller. CRs-Fixed: 371929 Change-Id: I4e9c7e994d643978b9889316b899f0251be807b6 Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>