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path: root/drivers/usb/storage/onetouch.c
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Diffstat (limited to 'drivers/usb/storage/onetouch.c')
-rw-r--r--drivers/usb/storage/onetouch.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index 89401a5..55ee2d3 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -52,6 +52,7 @@ struct usb_onetouch {
struct urb *irq; /* urb for interrupt in report */
unsigned char *data; /* input data */
dma_addr_t data_dma;
+ unsigned int is_open:1;
};
static void usb_onetouch_irq(struct urb *urb, struct pt_regs *regs)
@@ -89,6 +90,7 @@ static int usb_onetouch_open(struct input_dev *dev)
{
struct usb_onetouch *onetouch = dev->private;
+ onetouch->is_open = 1;
onetouch->irq->dev = onetouch->udev;
if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
err("usb_submit_urb failed");
@@ -103,8 +105,30 @@ static void usb_onetouch_close(struct input_dev *dev)
struct usb_onetouch *onetouch = dev->private;
usb_kill_urb(onetouch->irq);
+ onetouch->is_open = 0;
}
+#ifdef CONFIG_PM
+static void usb_onetouch_pm_hook(struct us_data *us, int action)
+{
+ struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra;
+
+ if (onetouch->is_open) {
+ switch (action) {
+ case US_SUSPEND:
+ usb_kill_urb(onetouch->irq);
+ break;
+ case US_RESUME:
+ if (usb_submit_urb(onetouch->irq, GFP_KERNEL) != 0)
+ err("usb_submit_urb failed");
+ break;
+ default:
+ break;
+ }
+ }
+}
+#endif /* CONFIG_PM */
+
int onetouch_connect_input(struct us_data *ss)
{
struct usb_device *udev = ss->pusb_dev;
@@ -185,6 +209,9 @@ int onetouch_connect_input(struct us_data *ss)
ss->extra_destructor = onetouch_release_input;
ss->extra = onetouch;
+#ifdef CONFIG_PM
+ ss->suspend_resume_hook = usb_onetouch_pm_hook;
+#endif
input_register_device(onetouch->dev);
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