>From f7c1e2f15bab537c487f935f0701f01705afc90d Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oliver@xxxxxxxxxx>
Date: Mon, 7 Jun 2010 11:41:15 +0200
Subject: [PATCH 1/3] usbtouchscreen: Implement basic suspend/resume
This implements basic support for suspend & resume
Signed-off-by: Oliver Neukum <oneukum@xxxxxxx>
---
drivers/input/touchscreen/usbtouchscreen.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 567d572..6d23c0e 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -1291,6 +1291,27 @@ static void usbtouch_close(struct input_dev *input)
usb_kill_urb(usbtouch->irq);
}
+static int usbtouch_suspend
+(struct usb_interface *intf, pm_message_t message)
+{
+ struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
+
+ usb_kill_urb(usbtouch->irq);
+ return 0;
+}
+
+static int usbtouch_resume(struct usb_interface *intf)
+{
+ struct usbtouch_usb *usbtouch = usb_get_intfdata(intf);
+ struct input_dev *input = usbtouch->input;
+ int result = 0;
+
+ mutex_lock(&input->mutex);
+ if (input->users)
+ result = usb_submit_urb(usbtouch->irq, GFP_NOIO);
+ mutex_unlock(&input->mutex);
+ return result;
+}
static void usbtouch_free_buffers(struct usb_device *udev,
struct usbtouch_usb *usbtouch)
@@ -1481,6 +1502,8 @@ static struct usb_driver usbtouch_driver = {
.name = "usbtouchscreen",
.probe = usbtouch_probe,
.disconnect = usbtouch_disconnect,
+ .suspend = usbtouch_suspend,
+ .resume = usbtouch_resume,
.id_table = usbtouch_devices,
};
--
1.6.4.2
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