b939ca9370
Many ikc messages expecting a reply use wait_event_interruptible incorrectly, freeing memory that could still be used on the other side. This commit implements a generic ikc send and wait helper that helps with memory management and ownership properly: - if the message succeeds and a reply comes back normally, the memory is freed by the caller as usual - if the wait fails (signal before the reply comes or timeout) then the memory is set as owner by ikc and will be free when the reply comes back later - if the reply never comes, the memory is freed at shutdown when destroying ikc channels Refs: #1076 Change-Id: I7f348d9029a6ad56ba9a50c836105ec39fa14943