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

drivers/input/serio/hyperv-keyboard.c

+13 −0
Original line number Diff line number Diff line
@@ -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);