If SiriusXM wants to create a temporary all-Van Halen channel, or even have a Van Halen day on one of its regular rock channels, it will have to either get permission from the label to do so or work with the label to create a tribute channel. This is usually no problem, as the labels see the death of a star as an opportunity to sell more music from the individual's (or his band's) catalog.
UPDATE: Let the cash registers ring! SXM will be launching its Van Halen Tribute Channel at 9 p.m. EDT tonight, taking over Deep Tracks (Ch. 27). It's going to contain lots of music plus recorded interviews and remembrances, which makes me wonder if SXM might have made a deal a while back, knowing that Eddie didn't have long to live, and has plenty of material in the can to run over the next few days. A morbid thought, but if news services can pre-write obituaries of notables, what can't a subscription radio service and a record company do business concerning a star's tribute channel before the star dies?