USB: cdc-acm: fix I/O after failed open
Make sure to kill any already submitted read urbs on read-urb submission failures in open in order to prevent doing I/O for a closed port. Fixes: 088c64f8 ("USB: cdc-acm: re-write read processing") Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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