Commit 62238f3a authored by Dexuan Cui's avatar Dexuan Cui Committed by Dmitry Torokhov

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: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent e179d5fa
...@@ -170,6 +170,15 @@ static void hv_kbd_on_receive(struct hv_device *hv_dev, ...@@ -170,6 +170,15 @@ static void hv_kbd_on_receive(struct hv_device *hv_dev,
serio_interrupt(kbd_dev->hv_serio, scan_code, 0); serio_interrupt(kbd_dev->hv_serio, scan_code, 0);
} }
spin_unlock_irqrestore(&kbd_dev->lock, flags); 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; break;
default: default:
...@@ -376,6 +385,9 @@ static int hv_kbd_probe(struct hv_device *hv_dev, ...@@ -376,6 +385,9 @@ static int hv_kbd_probe(struct hv_device *hv_dev,
goto err_close_vmbus; goto err_close_vmbus;
serio_register_port(kbd_dev->hv_serio); serio_register_port(kbd_dev->hv_serio);
device_init_wakeup(&hv_dev->device, true);
return 0; return 0;
err_close_vmbus: err_close_vmbus:
...@@ -390,6 +402,7 @@ static int hv_kbd_remove(struct hv_device *hv_dev) ...@@ -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); 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); serio_unregister_port(kbd_dev->hv_serio);
vmbus_close(hv_dev->channel); vmbus_close(hv_dev->channel);
kfree(kbd_dev); kfree(kbd_dev);
......
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