tree 2416bc631cf4dc3aee594a1d2f78380a849892e7
parent f5a52516b1496533ef75ef181575faf891f8dc1a
author Daniel Verkamp <dverkamp@chromium.org> 1563828739 -0700
committer Commit Bot <commit-bot@chromium.org> 1568053240 +0000

usb: clarify transfer cancellation API

Rather than having a get_canceller() function on UsbTransfer, make the
submit function return the canceller.  This makes it clear that the
transfer can't be cancelled before it is submitted.

BUG=None
TEST=None

Change-Id: Ice36c3096a1f8a5aafe93b5d5e27eb371183c19f
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1783599
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>