• Rafael J. Wysocki's avatar
    PM / sleep: Handle failures in device_suspend_late() consistently · 3a17fb32
    Rafael J. Wysocki authored
    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: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Tested-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    Cc: All applicable <stable@vger.kernel.org>
    3a17fb32
main.c 43.5 KB