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path: root/drivers/usb/core/generic.c
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Diffstat (limited to 'drivers/usb/core/generic.c')
-rw-r--r--drivers/usb/core/generic.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index b2fc2b11525..c1cb94e9f24 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -40,7 +40,7 @@ static int is_activesync(struct usb_interface_descriptor *desc)
40 && desc->bInterfaceProtocol == 1; 40 && desc->bInterfaceProtocol == 1;
41} 41}
42 42
43static int choose_configuration(struct usb_device *udev) 43int usb_choose_configuration(struct usb_device *udev)
44{ 44{
45 int i; 45 int i;
46 int num_configs; 46 int num_configs;
@@ -161,17 +161,20 @@ static int generic_probe(struct usb_device *udev)
161 /* Choose and set the configuration. This registers the interfaces 161 /* Choose and set the configuration. This registers the interfaces
162 * with the driver core and lets interface drivers bind to them. 162 * with the driver core and lets interface drivers bind to them.
163 */ 163 */
164 c = choose_configuration(udev); 164 if (udev->authorized == 0)
165 if (c >= 0) { 165 dev_err(&udev->dev, "Device is not authorized for usage\n");
166 err = usb_set_configuration(udev, c); 166 else {
167 if (err) { 167 c = usb_choose_configuration(udev);
168 dev_err(&udev->dev, "can't set config #%d, error %d\n", 168 if (c >= 0) {
169 err = usb_set_configuration(udev, c);
170 if (err) {
171 dev_err(&udev->dev, "can't set config #%d, error %d\n",
169 c, err); 172 c, err);
170 /* This need not be fatal. The user can try to 173 /* This need not be fatal. The user can try to
171 * set other configurations. */ 174 * set other configurations. */
175 }
172 } 176 }
173 } 177 }
174
175 /* USB device state == configured ... usable */ 178 /* USB device state == configured ... usable */
176 usb_notify_add_device(udev); 179 usb_notify_add_device(udev);
177 180
@@ -203,8 +206,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg)
203 */ 206 */
204 if (!udev->parent) 207 if (!udev->parent)
205 rc = hcd_bus_suspend(udev); 208 rc = hcd_bus_suspend(udev);
209
210 /* Non-root devices don't need to do anything for FREEZE or PRETHAW */
211 else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
212 rc = 0;
206 else 213 else
207 rc = usb_port_suspend(udev); 214 rc = usb_port_suspend(udev);
215
208 return rc; 216 return rc;
209} 217}
210 218