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path: root/drivers/usb/core/message.c
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Diffstat (limited to 'drivers/usb/core/message.c')
-rw-r--r--drivers/usb/core/message.c66
1 files changed, 33 insertions, 33 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 1ed5afd91e6d..131f73649b60 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1540,7 +1540,6 @@ static void usb_release_interface(struct device *dev)
kfree(intf);
}
-#ifdef CONFIG_HOTPLUG
static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct usb_device *usb_dev;
@@ -1575,14 +1574,6 @@ static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env)
return 0;
}
-#else
-
-static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
- return -ENODEV;
-}
-#endif /* CONFIG_HOTPLUG */
-
struct device_type usb_if_device_type = {
.name = "usb_interface",
.release = usb_release_interface,
@@ -1795,7 +1786,8 @@ free_interfaces:
if (dev->actconfig && usb_disable_lpm(dev)) {
dev_err(&dev->dev, "%s Failed to disable LPM\n.", __func__);
mutex_unlock(hcd->bandwidth_mutex);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto free_interfaces;
}
ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL);
if (ret < 0) {
@@ -1806,29 +1798,8 @@ free_interfaces:
goto free_interfaces;
}
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- USB_REQ_SET_CONFIGURATION, 0, configuration, 0,
- NULL, 0, USB_CTRL_SET_TIMEOUT);
- if (ret < 0) {
- /* All the old state is gone, so what else can we do?
- * The device is probably useless now anyway.
- */
- cp = NULL;
- }
-
- dev->actconfig = cp;
- if (!cp) {
- usb_set_device_state(dev, USB_STATE_ADDRESS);
- usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
- /* Leave LPM disabled while the device is unconfigured. */
- mutex_unlock(hcd->bandwidth_mutex);
- usb_autosuspend_device(dev);
- goto free_interfaces;
- }
- mutex_unlock(hcd->bandwidth_mutex);
- usb_set_device_state(dev, USB_STATE_CONFIGURED);
-
- /* Initialize the new interface structures and the
+ /*
+ * Initialize the new interface structures and the
* hc/hcd/usbcore interface/endpoint state.
*/
for (i = 0; i < nintf; ++i) {
@@ -1872,6 +1843,35 @@ free_interfaces:
}
kfree(new_interfaces);
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ USB_REQ_SET_CONFIGURATION, 0, configuration, 0,
+ NULL, 0, USB_CTRL_SET_TIMEOUT);
+ if (ret < 0 && cp) {
+ /*
+ * All the old state is gone, so what else can we do?
+ * The device is probably useless now anyway.
+ */
+ usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL);
+ for (i = 0; i < nintf; ++i) {
+ usb_disable_interface(dev, cp->interface[i], true);
+ put_device(&cp->interface[i]->dev);
+ cp->interface[i] = NULL;
+ }
+ cp = NULL;
+ }
+
+ dev->actconfig = cp;
+ mutex_unlock(hcd->bandwidth_mutex);
+
+ if (!cp) {
+ usb_set_device_state(dev, USB_STATE_ADDRESS);
+
+ /* Leave LPM disabled while the device is unconfigured. */
+ usb_autosuspend_device(dev);
+ return ret;
+ }
+ usb_set_device_state(dev, USB_STATE_CONFIGURED);
+
if (cp->string == NULL &&
!(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
cp->string = usb_cache_string(dev, cp->desc.iConfiguration);