Quoting Ville Syrjälä (2018-04-27 13:41:42) > On Thu, Apr 26, 2018 at 08:09:56PM -0700, Tarun Vyas wrote: > > On a second thought, I was doing it wrong in the initial RFC. Can't do a > > wait_for_register with irqs disabled by local_irq_disable(). So, will have > > to *poll* the PSR_STATE, but will that be desirable ? > > Do it before disabling the irqs? As long as we prevent it from > re-entering PSR after the wait it should be safe. Maybe the vblank irq > is the best way to prevent the re-entry?
There's also an atomic variant of wait_for_register. But if we don't need to wait with irqs off, don't. -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
