As being the 'is_tx = 0' can't be moved in the complete handler because of a probable race involving the hold off in switching to STATE_RX_AACK_ON and a new interrupt, we introduce an intermediate 'was_tx' boolean just for this reason. There isn't any Fixes tag implementing below, a lot of https://convertproaddon48370.nizarblog.com/28793465/the-fact-about-lifetime-hosting-that-no-one-is-suggesting