On 2018-05-24 17:07:16 [+0200], Rafael J. Wysocki wrote: > On Thu, May 24, 2018 at 4:24 PM, Sebastian Andrzej Siewior > <[email protected]> wrote: > > From: Thomas Gleixner <[email protected]> > > > > timekeeping suspend/resume calls read_persistent_clock() which takes > > rtc_lock. That results in might sleep warnings because at that point > > we run with interrupts disabled. > > > > We cannot convert rtc_lock to a raw spinlock as that would trigger > > other might sleep warnings. > > > > As a workaround we disable the might sleep warnings by setting > > system_state to SYSTEM_SUSPEND before calling sysdev_suspend() and > > restoring it to SYSTEM_RUNNING afer sysdev_resume(). > > > > Signed-off-by: Thomas Gleixner <[email protected]> > > Signed-off-by: Sebastian Andrzej Siewior <[email protected]> > > Hmm. Don't we also need to cover suspend-to-idle?
Well, if you agree with the approach then I would look into it. Sebastian
