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| author |   Dexuan Cui <decui@microsoft.com> | 2014-08-06 13:33:54 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-08-06 14:10:06 -0700 |
| commit | 62238f3aadc9bc56da70100e19ec61b9f8d72a5f (patch) | |
| tree | bca445a27b9a4f75d53fbafc7f145278b3328e4c /drivers/input/serio/hyperv-keyboard.c | |
| parent | Input: imx_keypad - remove ifdef round PM methods (diff) | |
| download | linux-dev-62238f3aadc9bc56da70100e19ec61b9f8d72a5f.tar.xz linux-dev-62238f3aadc9bc56da70100e19ec61b9f8d72a5f.zip | |
Input: hyperv-keyboard - register as a wakeup source
With this patch, we can press a key to wake up the VM after the VM executes
"echo freeze > /sys/power/state".
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/serio/hyperv-keyboard.c')
| -rw-r--r-- | drivers/input/serio/hyperv-keyboard.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c index 613261994621..e74e5d6e5f9f 100644 --- a/drivers/input/serio/hyperv-keyboard.c +++ b/drivers/input/serio/hyperv-keyboard.c @@ -170,6 +170,15 @@ static void hv_kbd_on_receive(struct hv_device *hv_dev, serio_interrupt(kbd_dev->hv_serio, scan_code, 0); } spin_unlock_irqrestore(&kbd_dev->lock, flags); + + /* + * Only trigger a wakeup on key down, otherwise + * "echo freeze > /sys/power/state" can't really enter the + * state because the Enter-UP can trigger a wakeup at once. + */ + if (!(info & IS_BREAK)) + pm_wakeup_event(&hv_dev->device, 0); + break; default: @@ -376,6 +385,9 @@ static int hv_kbd_probe(struct hv_device *hv_dev, goto err_close_vmbus; serio_register_port(kbd_dev->hv_serio); + + device_init_wakeup(&hv_dev->device, true); + return 0; err_close_vmbus: @@ -390,6 +402,7 @@ static int hv_kbd_remove(struct hv_device *hv_dev) { struct hv_kbd_dev *kbd_dev = hv_get_drvdata(hv_dev); + device_init_wakeup(&hv_dev->device, false); serio_unregister_port(kbd_dev->hv_serio); vmbus_close(hv_dev->channel); kfree(kbd_dev); |