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    Subject[PATCH 2/2] platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
    Date
    From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

    Modify surface_button_notify() to make it wake up the system from
    suspend-to-idle (by reporting "hard" wakeup events while suspended)
    and add wakeup initialization to surface_button_add() for wakeup
    events reported by this driver to work at all.

    Link: https://bugzilla.kernel.org/show_bug.cgi?id=198389
    Reported-by: Valentin Manea <valy@mrs.ro>
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    ---
    drivers/platform/x86/surfacepro3_button.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    Index: linux-pm/drivers/platform/x86/surfacepro3_button.c
    ===================================================================
    --- linux-pm.orig/drivers/platform/x86/surfacepro3_button.c
    +++ linux-pm/drivers/platform/x86/surfacepro3_button.c
    @@ -119,7 +119,7 @@ static void surface_button_notify(struct
    if (key_code == KEY_RESERVED)
    return;
    if (pressed)
    - pm_wakeup_event(&device->dev, 0);
    + pm_wakeup_dev_event(&device->dev, 0, button->suspended);
    if (button->suspended)
    return;
    input_report_key(input, key_code, pressed?1:0);
    @@ -185,6 +185,8 @@ static int surface_button_add(struct acp
    error = input_register_device(input);
    if (error)
    goto err_free_input;
    +
    + device_init_wakeup(&device->dev, true);
    dev_info(&device->dev,
    "%s [%s]\n", name, acpi_device_bid(device));
    return 0;
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