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    Subject[PATCH 7/10 v6] PM / Domains: Don't stop wakeup devices during system sleep transitions
    Date
    From: Rafael J. Wysocki <rjw@sisk.pl>

    Devices that are set up to wake up the system from sleep states
    should not be stopped and power should not be removed from them
    when the system goes into a sleep state. Make the generic PM domain
    code respect that limitation.

    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    ---
    drivers/base/power/domain.c | 6 ++++++
    1 file changed, 6 insertions(+)

    Index: linux-2.6/drivers/base/power/domain.c
    ===================================================================
    --- linux-2.6.orig/drivers/base/power/domain.c
    +++ linux-2.6/drivers/base/power/domain.c
    @@ -445,6 +445,9 @@ static int pm_genpd_suspend_noirq(struct
    if (ret)
    return ret;

    + if (device_may_wakeup(dev))
    + return 0;
    +
    if (genpd->stop_device)
    genpd->stop_device(dev);

    @@ -665,6 +668,9 @@ static int pm_genpd_dev_poweroff_noirq(s
    if (ret)
    return ret;

    + if (device_may_wakeup(dev))
    + return 0;
    +
    if (genpd->stop_device)
    genpd->stop_device(dev);



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