On Thu, 2018-06-28 at 09:57 +0200, Uwe Kleine-König wrote: > When a siox master device is registered a kthread is created that is > only started when triggered by userspace. So this thread might be in > TASK_UNINTERRUPTIBLE state for long and trigger a warning > > [ 241.130465] INFO: task siox-0:626 blocked for more than 120 seconds. > > with the respective debug settings enabled. It might be right to put an > unstarted thread to TASK_IDLE (in kernel/kthread.c:kthread()) instead, > but independant of this discussion it is cleaner for > siox_master_register() to start the thread immediately. The effect is > that it enters its own waiting state and then stays in state TASK_IDLE > which doesn't trigger the above warning. > > As siox_poll_thread() uses some variables of the device the > initialisation of these is moved before thread creation. > > Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de> > --- Acked-by: Gavin Schenk <g.sch...@eckelmann.de
I tested that this warning is gone with this patch. Regards Gavin Schenk
