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path: root/drivers/usb
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Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/hub.c58
1 files changed, 32 insertions, 26 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a42db75c2336..087e3bb70e09 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -333,6 +333,27 @@ static int get_port_status(struct usb_device *hdev, int port1,
return status;
}
+static int hub_port_status(struct usb_hub *hub, int port1,
+ u16 *status, u16 *change)
+{
+ int ret;
+
+ mutex_lock(&hub->status_mutex);
+ ret = get_port_status(hub->hdev, port1, &hub->status->port);
+ if (ret < 4) {
+ dev_err(hub->intfdev,
+ "%s failed (err = %d)\n", __func__, ret);
+ if (ret >= 0)
+ ret = -EIO;
+ } else {
+ *status = le16_to_cpu(hub->status->port.wPortStatus);
+ *change = le16_to_cpu(hub->status->port.wPortChange);
+ ret = 0;
+ }
+ mutex_unlock(&hub->status_mutex);
+ return ret;
+}
+
static void kick_khubd(struct usb_hub *hub)
{
unsigned long flags;
@@ -610,9 +631,8 @@ static void hub_port_logical_disconnect(struct usb_hub *hub, int port1)
}
/* caller has locked the hub device */
-static int hub_pre_reset(struct usb_interface *intf)
+static void hub_stop(struct usb_hub *hub)
{
- struct usb_hub *hub = usb_get_intfdata(intf);
struct usb_device *hdev = hub->hdev;
int i;
@@ -622,6 +642,14 @@ static int hub_pre_reset(struct usb_interface *intf)
usb_disconnect(&hdev->children[i]);
}
hub_quiesce(hub);
+}
+
+/* caller has locked the hub device */
+static int hub_pre_reset(struct usb_interface *intf)
+{
+ struct usb_hub *hub = usb_get_intfdata(intf);
+
+ hub_stop(hub);
return 0;
}
@@ -910,7 +938,7 @@ static void hub_disconnect(struct usb_interface *intf)
/* Disconnect all children and quiesce the hub */
hub->error = 0;
- hub_pre_reset(intf);
+ hub_stop(hub);
usb_set_intfdata (intf, NULL);
@@ -1510,28 +1538,6 @@ out_authorized:
}
-static int hub_port_status(struct usb_hub *hub, int port1,
- u16 *status, u16 *change)
-{
- int ret;
-
- mutex_lock(&hub->status_mutex);
- ret = get_port_status(hub->hdev, port1, &hub->status->port);
- if (ret < 4) {
- dev_err (hub->intfdev,
- "%s failed (err = %d)\n", __FUNCTION__, ret);
- if (ret >= 0)
- ret = -EIO;
- } else {
- *status = le16_to_cpu(hub->status->port.wPortStatus);
- *change = le16_to_cpu(hub->status->port.wPortChange);
- ret = 0;
- }
- mutex_unlock(&hub->status_mutex);
- return ret;
-}
-
-
/* Returns 1 if @hub is a WUSB root hub, 0 otherwise */
static unsigned hub_is_wusb(struct usb_hub *hub)
{
@@ -2726,7 +2732,7 @@ static void hub_events(void)
/* If the hub has died, clean up after it */
if (hdev->state == USB_STATE_NOTATTACHED) {
hub->error = -ENODEV;
- hub_pre_reset(intf);
+ hub_stop(hub);
goto loop;
}