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    Subject[PATCH 24/47] PM: device_suspend/resume may sleep
    Date
    From: Pavel Machek <pavel@suse.cz>

    This adds warning when someone tries them from atomic context.

    Signed-off-by: Pavel Machek <pavel@suse.cz>
    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    ---
    drivers/base/power/resume.c | 1 +
    drivers/base/power/suspend.c | 1 +
    2 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
    index 48e3d49..7cb62d6 100644
    --- a/drivers/base/power/resume.c
    +++ b/drivers/base/power/resume.c
    @@ -96,6 +96,7 @@ void dpm_resume(void)

    void device_resume(void)
    {
    + might_sleep();
    down(&dpm_sem);
    dpm_resume();
    up(&dpm_sem);
    diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
    index 6453c25..ece136b 100644
    --- a/drivers/base/power/suspend.c
    +++ b/drivers/base/power/suspend.c
    @@ -140,6 +140,7 @@ int device_suspend(pm_message_t state)
    {
    int error = 0;

    + might_sleep();
    down(&dpm_sem);
    down(&dpm_list_sem);
    while (!list_empty(&dpm_active) && error == 0) {
    --
    1.4.2.1
    -
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