> -----Original Message----- > From: Dexuan Cui [mailto:decui@xxxxxxxxxxxxx] > Sent: Friday, August 1, 2014 7:28 AM > To: gregkh@xxxxxxxxxxxxxxxxxxx; dmitry.torokhov@xxxxxxxxx; linux- > input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; driverdev- > devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx; apw@xxxxxxxxxxxxx; > jasowang@xxxxxxxxxx > Cc: KY Srinivasan; Haiyang Zhang > Subject: [PATCH] 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". > > This addresses part of https://bugzilla.redhat.com/show_bug.cgi?id=1086100 > > Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> Thanks Dexuan. Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> > Signed-off-by: Dexuan Cui <decui@xxxxxxxxxxxxx> > --- > drivers/input/serio/hyperv-keyboard.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/input/serio/hyperv-keyboard.c > b/drivers/input/serio/hyperv-keyboard.c > index 6132619..e74e5d6 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); > -- > 1.9.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
