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authorRafael J. Wysocki <rjw@sisk.pl>2011-07-06 10:51:40 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-07-06 10:51:40 +0200
commiteea3fc0357eb89d0b2d1af37bdfb83eb4076a542 (patch)
treebe45aa2bc5370bdba7926f35dfdd73e8a6f464d0 /Documentation/power
parent632e270e01d8a1ee9e8ea56c83028727f17b1d17 (diff)
PCI / PM: Detect early wakeup in pci_pm_prepare()
A subsequent patch is going to move the invocation of pm_runtime_barrier() from dpm_prepare() to __device_suspend(). Consequently, early wakeup events resulting from runtime resume requests for wakeup devices queued up right before system suspend will only be detected after all of the subsystem-level .prepare() callbacks have run. However, the PCI bus type calls pm_runtime_get_sync() from its pci_pm_prepare() callback routine, so it would destroy the early wakeup events information regarding PCI devices. To prevent this from happening add an early wakeup detection mechanism, analogous to the one currently in dpm_prepare(), to pci_pm_prepare(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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