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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-05-20 23:09:49 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-05-20 23:09:49 +0200
commit3a17fb329da68cb00558721aff876a80bba2fdb9 (patch)
treeccd2f44a5496aa8d85437d9f17806c89f5fa7664 /arch/s390/Kconfig
parentPM / sleep: Drop unused `info' variable (diff)
downloadlinux-3a17fb329da68cb00558721aff876a80bba2fdb9.tar.xz
linux-3a17fb329da68cb00558721aff876a80bba2fdb9.zip
PM / sleep: Handle failures in device_suspend_late() consistently
Grygorii Strashko reports: The PM runtime will be left disabled for the device if its .suspend_late() callback fails and async suspend is not allowed for this device. In this case device will not be added in dpm_late_early_list and dpm_resume_early() will ignore this device, as result PM runtime will be disabled for it forever (side effect: after 8 subsequent failures for the same device the PM runtime will be reenabled due to disable_depth overflow). To fix this problem, add devices to dpm_late_early_list regardless of whether or not device_suspend_late() returns errors for them. That will ensure failures in there to be handled consistently for all devices regardless of their async suspend/resume status. Reported-by: Grygorii Strashko <grygorii.strashko@ti.com> Tested-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: All applicable <stable@vger.kernel.org>
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