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    Subject[PATCH v2 3/7] arm: Support restart through restart notifier call chain
    Date
    The kernel core now supports a notifier call chain for system
    restart functions.

    With this change, the arm_pm_restart callback is now optional,
    so check if it is set before calling it. Only call the notifier
    functions if arm_pm_restart is not set.

    Signed-off-by: Guenter Roeck <linux@roeck-us.net>
    ---
    v2: Only call notifier call chain if arm_pm_restart is not set
    Do not include linux/watchdog.h

    arch/arm/kernel/process.c | 6 +++++-
    1 file changed, 5 insertions(+), 1 deletion(-)

    diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
    index 81ef686..5108e45 100644
    --- a/arch/arm/kernel/process.c
    +++ b/arch/arm/kernel/process.c
    @@ -230,7 +230,11 @@ void machine_restart(char *cmd)
    local_irq_disable();
    smp_send_stop();

    - arm_pm_restart(reboot_mode, cmd);
    + if (arm_pm_restart)
    + arm_pm_restart(reboot_mode, cmd);
    + else
    + blocking_notifier_call_chain(&restart_notifier_list,
    + reboot_mode, cmd);

    /* Give a grace period for failure to restart of 1s */
    mdelay(1000);
    --
    1.9.1


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