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authorSudeep Holla <Sudeep.Holla@arm.com>2016-08-19 14:41:00 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-09-13 02:17:19 +0200
commitfa7fd6fa38e36d88bc9f2d0e45e5b9bd0387079f (patch)
tree21c9156a38c00468ba0b3a332282f101055f03c4 /mm/Kconfig.debug
parent5b3f249c94ce1f46bacd9814385b0ee2d1ae52f3 (diff)
PM / sleep: enable suspend-to-idle even without registered suspend_ops
Suspend-to-idle (aka the "freeze" sleep state) is a system sleep state in which all of the processors enter deepest possible idle state and wait for interrupts right after suspending all the devices. There is no hard requirement for a platform to support and register platform specific suspend_ops to enter suspend-to-idle/freeze state. Only deeper system sleep states like PM_SUSPEND_STANDBY and PM_SUSPEND_MEM rely on such low level support/implementation. suspend-to-idle can be entered as along as all the devices can be suspended. This patch enables the support for suspend-to-idle even on systems that don't have any low level support for deeper system sleep states and/or don't register any platform specific suspend_ops. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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