greybus: operation: fix null-deref on operation cancel
Incoming operations are created without a response message. If an operation were to be cancelled before it has been fully processed (e.g. on connection destroy), we would get a null-pointer dereference in gb_operation_cancel. Signed-off-by:Johan Hovold <johan@hovoldconsulting.com> Reviewed-by:
Alex Elder <elder@linaro.org> Signed-off-by:
Greg Kroah-Hartman <greg@kroah.com>
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