[PATCH] input: tablet: pegasus_notetaker: USB PM fixes

From: Martin Kepplinger
Date: Mon Jun 13 2016 - 09:39:23 EST


In close() we only need usb_autopm_put_interface(), in reset_resume()
we need to set the device mode, and in suspend(), we must cancel
the workqueue's work.

Signed-off-by: Martin Kepplinger <martink@xxxxxxxxx>
---
Thanks Oliver for these changes. For me, everything works as before.

Dmitry, do you want a new version of the whole thing instead of this
fix?

thanks
martin

drivers/input/tablet/pegasus_notetaker.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/input/tablet/pegasus_notetaker.c b/drivers/input/tablet/pegasus_notetaker.c
index 83aa583..0c339e7 100644
--- a/drivers/input/tablet/pegasus_notetaker.c
+++ b/drivers/input/tablet/pegasus_notetaker.c
@@ -211,14 +211,11 @@ static int pegasus_open(struct input_dev *dev)
static void pegasus_close(struct input_dev *dev)
{
struct pegasus *pegasus = input_get_drvdata(dev);
- int autopm_error;

- autopm_error = usb_autopm_get_interface(pegasus->intf);
usb_kill_urb(pegasus->irq);
cancel_work_sync(&pegasus->init);

- if (!autopm_error)
- usb_autopm_put_interface(pegasus->intf);
+ usb_autopm_put_interface(pegasus->intf);
}

static int pegasus_probe(struct usb_interface *intf,
@@ -364,6 +361,7 @@ static int pegasus_suspend(struct usb_interface *intf, pm_message_t message)

mutex_lock(&pegasus->dev->mutex);
usb_kill_urb(pegasus->irq);
+ cancel_work_sync(&pegasus->init);
mutex_unlock(&pegasus->dev->mutex);

return 0;
@@ -384,6 +382,11 @@ static int pegasus_resume(struct usb_interface *intf)

static int pegasus_reset_resume(struct usb_interface *intf)
{
+ struct pegasus *pegasus = usb_get_intfdata(intf);
+
+ if (pegasus->dev->users)
+ pegasus_set_mode(pegasus, PEN_MODE_XY, NOTETAKER_LED_MOUSE);
+
return pegasus_resume(intf);
}

--
2.1.4