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path: root/drivers/usb/core
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Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/hub.c38
-rw-r--r--drivers/usb/core/usb.c7
-rw-r--r--drivers/usb/core/usb.h4
3 files changed, 25 insertions, 24 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 26c8cb5f3e6..b00514d9a60 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1407,9 +1407,9 @@ int usb_new_device(struct usb_device *udev)
* (Includes HNP test device.)
*/
if (udev->bus->b_hnp_enable || udev->bus->is_b_host) {
- static int __usb_suspend_device(struct usb_device *,
+ static int __usb_port_suspend(struct usb_device *,
int port1);
- err = __usb_suspend_device(udev, udev->bus->otg_port);
+ err = __usb_port_suspend(udev, udev->bus->otg_port);
if (err < 0)
dev_dbg(&udev->dev, "HNP fail, %d\n", err);
}
@@ -1684,7 +1684,7 @@ static int hub_port_suspend(struct usb_hub *hub, int port1,
* the root hub for their bus goes into global suspend ... so we don't
* (falsely) update the device power state to say it suspended.
*/
-static int __usb_suspend_device (struct usb_device *udev, int port1)
+static int __usb_port_suspend (struct usb_device *udev, int port1)
{
int status = 0;
@@ -1712,8 +1712,8 @@ static int __usb_suspend_device (struct usb_device *udev, int port1)
}
}
- /* we only change a device's upstream USB link.
- * root hubs have no upstream USB link.
+ /* we change the device's upstream USB link,
+ * but root hubs have no upstream USB link.
*/
if (udev->parent)
status = hub_port_suspend(hdev_to_hub(udev->parent), port1,
@@ -1727,14 +1727,14 @@ static int __usb_suspend_device (struct usb_device *udev, int port1)
#endif
/*
- * usb_suspend_device - suspend a usb device
+ * usb_port_suspend - suspend a usb device's upstream port
* @udev: device that's no longer in active use
* Context: must be able to sleep; device not locked; pm locks held
*
* Suspends a USB device that isn't in active use, conserving power.
* Devices may wake out of a suspend, if anything important happens,
* using the remote wakeup mechanism. They may also be taken out of
- * suspend by the host, using usb_resume_device(). It's also routine
+ * suspend by the host, using usb_port_resume(). It's also routine
* to disconnect devices while they are suspended.
*
* This only affects the USB hardware for a device; its interfaces
@@ -1746,12 +1746,12 @@ static int __usb_suspend_device (struct usb_device *udev, int port1)
*
* Returns 0 on success, else negative errno.
*/
-int usb_suspend_device(struct usb_device *udev)
+int usb_port_suspend(struct usb_device *udev)
{
#ifdef CONFIG_USB_SUSPEND
if (udev->state == USB_STATE_NOTATTACHED)
return -ENODEV;
- return __usb_suspend_device(udev, udev->portnum);
+ return __usb_port_suspend(udev, udev->portnum);
#else
/* NOTE: udev->state unchanged, it's not lying ... */
udev->dev.power.power_state = PMSG_SUSPEND;
@@ -1767,7 +1767,7 @@ int usb_suspend_device(struct usb_device *udev)
* resume (by host) or remote wakeup (by device) ... now see what changed
* in the tree that's rooted at this device.
*/
-static int finish_device_resume(struct usb_device *udev)
+static int finish_port_resume(struct usb_device *udev)
{
int status;
u16 devstatus;
@@ -1891,7 +1891,7 @@ hub_port_resume(struct usb_hub *hub, int port1, struct usb_device *udev)
/* TRSMRCY = 10 msec */
msleep(10);
if (udev)
- status = finish_device_resume(udev);
+ status = finish_port_resume(udev);
}
}
if (status < 0)
@@ -1903,7 +1903,7 @@ hub_port_resume(struct usb_hub *hub, int port1, struct usb_device *udev)
#endif
/*
- * usb_resume_device - re-activate a suspended usb device
+ * usb_port_resume - re-activate a suspended usb device's upstream port
* @udev: device to re-activate
* Context: must be able to sleep; device not locked; pm locks held
*
@@ -1915,14 +1915,16 @@ hub_port_resume(struct usb_hub *hub, int port1, struct usb_device *udev)
*
* Returns 0 on success, else negative errno.
*/
-int usb_resume_device(struct usb_device *udev)
+int usb_port_resume(struct usb_device *udev)
{
int status;
if (udev->state == USB_STATE_NOTATTACHED)
return -ENODEV;
- /* selective resume of one downstream hub-to-device port */
+ /* we change the device's upstream USB link,
+ * but root hubs have no upstream USB link.
+ */
if (udev->parent) {
#ifdef CONFIG_USB_SUSPEND
if (udev->state == USB_STATE_SUSPENDED) {
@@ -1934,7 +1936,7 @@ int usb_resume_device(struct usb_device *udev)
#endif
status = 0;
} else
- status = finish_device_resume(udev);
+ status = finish_port_resume(udev);
if (status < 0)
dev_dbg(&udev->dev, "can't resume, status %d\n",
status);
@@ -1962,7 +1964,7 @@ static int remote_wakeup(struct usb_device *udev)
dev_dbg(&udev->dev, "RESUME (wakeup)\n");
/* TRSMRCY = 10 msec */
msleep(10);
- status = finish_device_resume(udev);
+ status = finish_port_resume(udev);
}
usb_unlock_device(udev);
#endif
@@ -2069,7 +2071,7 @@ static int hub_resume(struct usb_interface *intf)
if (portstat & USB_PORT_STAT_SUSPEND)
status = hub_port_resume(hub, port1, udev);
else {
- status = finish_device_resume(udev);
+ status = finish_port_resume(udev);
if (status < 0) {
dev_dbg(&intf->dev, "resume port %d --> %d\n",
port1, status);
@@ -3128,6 +3130,7 @@ re_enumerate:
hub_port_logical_disconnect(parent_hub, port1);
return -ENODEV;
}
+EXPORT_SYMBOL(usb_reset_device);
/**
* usb_reset_composite_device - warn interface drivers and perform a USB port reset
@@ -3206,3 +3209,4 @@ int usb_reset_composite_device(struct usb_device *udev,
return ret;
}
+EXPORT_SYMBOL(usb_reset_composite_device);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index ab766e0fe4e..b28a31b2030 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -1014,7 +1014,7 @@ static int usb_generic_suspend(struct device *dev, pm_message_t message)
status = device_for_each_child(dev, NULL, verify_suspended);
if (status)
return status;
- return usb_suspend_device (to_usb_device(dev));
+ return usb_port_suspend(to_usb_device(dev));
}
if ((dev->driver == NULL) ||
@@ -1061,7 +1061,7 @@ static int usb_generic_resume(struct device *dev)
udev = to_usb_device(dev);
if (udev->state == USB_STATE_NOTATTACHED)
return 0;
- return usb_resume_device (to_usb_device(dev));
+ return usb_port_resume(udev);
}
if ((dev->driver == NULL) ||
@@ -1209,9 +1209,6 @@ EXPORT_SYMBOL(usb_find_interface);
EXPORT_SYMBOL(usb_ifnum_to_if);
EXPORT_SYMBOL(usb_altnum_to_altsetting);
-EXPORT_SYMBOL(usb_reset_device);
-EXPORT_SYMBOL(usb_reset_composite_device);
-
EXPORT_SYMBOL(__usb_get_extra_descriptor);
EXPORT_SYMBOL(usb_find_device);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 1217fbbe582..5a4eff5eec8 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -30,8 +30,8 @@ extern void usb_major_cleanup(void);
extern int usb_host_init(void);
extern void usb_host_cleanup(void);
-extern int usb_suspend_device(struct usb_device *dev);
-extern int usb_resume_device(struct usb_device *dev);
+extern int usb_port_suspend(struct usb_device *dev);
+extern int usb_port_resume(struct usb_device *dev);
extern struct device_driver usb_generic_driver;
extern int usb_generic_driver_data;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 15:04:31 +0000