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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-26 12:12:08 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-11-06 13:57:01 +0100
commit0eab11c9ae3b3cc5dd76f20b81d0247647a6e96f (patch)
tree28017e02257ab291f966247ad61d37e670c0a320 /drivers/pci/pci-driver.c
parentPCI / PM: Use the NEVER_SKIP driver flag (diff)
downloadlinux-0eab11c9ae3b3cc5dd76f20b81d0247647a6e96f.tar.xz
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PM / core: Add SMART_SUSPEND driver flag
Define and document a SMART_SUSPEND flag to instruct bus types and PM domains that the system suspend callbacks provided by the driver can cope with runtime-suspended devices, so from the driver's perspective it should be safe to leave devices in runtime suspend during system suspend. Setting that flag may also cause middle-layer code (bus types, PM domains etc.) to skip invocations of the ->suspend_late and ->suspend_noirq callbacks provided by the driver if the device is in runtime suspend at the beginning of the "late" phase of the system-wide suspend transition, in which case the driver's system-wide resume callbacks may be invoked back-to-back with its ->runtime_suspend callback, so the driver has to be able to cope with that too. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/pci/pci-driver.c')
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