• Rafael J. Wysocki's avatar
    PM / Core: Introduce struct syscore_ops for core subsystems PM · 40dc166c
    Rafael J. Wysocki authored
    Some subsystems need to carry out suspend/resume and shutdown
    operations with one CPU on-line and interrupts disabled.  The only
    way to register such operations is to define a sysdev class and
    a sysdev specifically for this purpose which is cumbersome and
    inefficient.  Moreover, the arguments taken by sysdev suspend,
    resume and shutdown callbacks are practically never necessary.
    
    For this reason, introduce a simpler interface allowing subsystems
    to register operations to be executed very late during system suspend
    and shutdown and very early during resume in the form of
    strcut syscore_ops objects.
    Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
    Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    40dc166c
syscore.c 2.74 KB