• Rafael J. Wysocki's avatar
    PM / Runtime: Return special error code if runtime PM is disabled · 632e270e
    Rafael J. Wysocki authored
    Some callers of pm_runtime_get_sync() and other runtime PM helper
    functions, scsi_autopm_get_host() and scsi_autopm_get_device() in
    particular, need to distinguish error codes returned when runtime PM
    is disabled (i.e. power.disable_depth is nonzero for the given
    device) from error codes returned in other situations.  For this
    reason, make the runtime PM helper functions return -EACCES when
    power.disable_depth is nonzero and ensure that this error code
    won't be returned by them in any other circumstances.  Modify
    scsi_autopm_get_host() and scsi_autopm_get_device() to check the
    error code returned by pm_runtime_get_sync() and ignore -EACCES.
    Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
    632e270e
scsi_pm.c 4.17 KB