On Thu, Sep 18, 2014 at 03:47:20PM -0700, Kumar Gala wrote: > On Sep 18, 2014, at 3:32 PM, Josh Cartwright <jo...@codeaurora.org> wrote: > > > By converting to the restart_notifier mechanism for restart, we allow > > for other mechanisms, like the watchdog, to be used for restart in the > > case where PS_HOLD has failed to reset the chip. > > > > Choose priority 128, as according to documentation, this mechanism "is > > sufficient to restart the entire system?. > > Will we use a higher priority for watchdog? or how would we fail over to > watchdog?
The registered restart handlers are called in (descending) priority order. This driver registers as 128, but conceivably there could be some super-board-specific restart mechanism that can register itself as higher priority than this and it will be attempted first. If PS_HOLD doesn't work, the lower priority restart handlers will continue to be called, including the watchdog, which is registering with the lowest priority (0). -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
