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    SubjectRe: [BUG] MIPS: Hibernation in the latest linux-mips:master branch not work
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    On Tue, 2009-06-30 at 15:45 +0100, Ralf Baechle wrote:
    > On Tue, Jun 30, 2009 at 10:41:08PM +0800, Wu Zhangjin wrote:
    >
    > > I just updated my git repository to the master branch of the latest
    > > linux-mips git repository, and tested the STD/Hibernation support on
    > > fuloong2e and yeeloong2f, it failed:
    > >
    > > when using the no_console_suspend kernel command line to debug, it
    > > stopped on:
    > >
    > > PM: Shringking memory... done (1000 pages freed)
    > > PM: Freed 160000 kbytes in 1.68 seconds (95.23 MB/s)
    > > PM: Creating hibernation image:
    > > PM: Need to copy 5053 pages
    > > PM: Hibernation image created (4195 pages copied)
    > >
    > > and then, the number indicator light of keyboard works well, but can not
    > > type anything.
    > >
    > > anybody have tested it on another platform? does it work?
    >
    > At the time of the merge I tested it on Malta and found it to be working.

    thanks! I will test it again and analyze why.

    hi, ralf, in the latest master branch of linux-mips git repo, seems
    there is a need to select the SYS_SUPPORTS_HOTPLUG_CPU option in every
    uni-processor board, otherwise, the suspend/hibernation can not be used,
    because you have set:

    config ARCH_HIBERNATION_POSSIBLE
    def_bool y
    depends on SYS_SUPPORTS_HOTPLUG_CPU

    config ARCH_SUSPEND_POSSIBLE
    def_bool y
    depends on SYS_SUPPORTS_HOTPLUG_CPU

    so, the board-specific patch must be pushed by the maintainers of
    boards. and if the board support SMP, they must implement the
    mips-specific hotplug support, is this right? I have selected
    SYS_SUPPORTS_HOTPLUG_CPU in LEMOTE_FULONG and will push a relative patch
    later.

    Regards,
    Wu Zhangjin



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