summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/usb/storage/onetouch.c27
-rw-r--r--drivers/usb/storage/usb.c4
-rw-r--r--drivers/usb/storage/usb.h9
3 files changed, 39 insertions, 1 deletions
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index 89401a59f95..55ee2d36d58 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);
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 356f471ba83..ca02ae97be8 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -188,6 +188,8 @@ static int storage_suspend(struct usb_interface *iface, pm_message_t message)
down(&us->dev_semaphore);
US_DEBUGP("%s\n", __FUNCTION__);
+ if (us->suspend_resume_hook)
+ (us->suspend_resume_hook)(us, US_SUSPEND);
iface->dev.power.power_state.event = message.event;
/* When runtime PM is working, we'll set a flag to indicate
@@ -204,6 +206,8 @@ static int storage_resume(struct usb_interface *iface)
down(&us->dev_semaphore);
US_DEBUGP("%s\n", __FUNCTION__);
+ if (us->suspend_resume_hook)
+ (us->suspend_resume_hook)(us, US_RESUME);
iface->dev.power.power_state.event = PM_EVENT_ON;
up(&us->dev_semaphore);
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 0cd1eebc449..7259fd1f6b0 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -93,7 +93,11 @@ struct us_unusual_dev {
typedef int (*trans_cmnd)(struct scsi_cmnd *, struct us_data*);
typedef int (*trans_reset)(struct us_data*);
typedef void (*proto_cmnd)(struct scsi_cmnd*, struct us_data*);
-typedef void (*extra_data_destructor)(void *); /* extra data destructor */
+typedef void (*extra_data_destructor)(void *); /* extra data destructor */
+typedef void (*pm_hook)(struct us_data *, int); /* power management hook */
+
+#define US_SUSPEND 0
+#define US_RESUME 1
/* we allocate one of these for every device that we remember */
struct us_data {
@@ -149,6 +153,9 @@ struct us_data {
/* subdriver information */
void *extra; /* Any extra data */
extra_data_destructor extra_destructor;/* extra data destructor */
+#ifdef CONFIG_PM
+ pm_hook suspend_resume_hook;
+#endif
};
/* Convert between us_data and the corresponding Scsi_Host */