diff options
Diffstat (limited to 'drivers/usb/core/generic.c')
| -rw-r--r-- | drivers/usb/core/generic.c | 26 |
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) && desc->bInterfaceProtocol == 1; } -static int choose_configuration(struct usb_device *udev) +int usb_choose_configuration(struct usb_device *udev) { int i; int num_configs; @@ -161,17 +161,20 @@ static int generic_probe(struct usb_device *udev) /* Choose and set the configuration. This registers the interfaces * with the driver core and lets interface drivers bind to them. */ - c = choose_configuration(udev); - if (c >= 0) { - err = usb_set_configuration(udev, c); - if (err) { - dev_err(&udev->dev, "can't set config #%d, error %d\n", + if (udev->authorized == 0) + dev_err(&udev->dev, "Device is not authorized for usage\n"); + else { + c = usb_choose_configuration(udev); + if (c >= 0) { + err = usb_set_configuration(udev, c); + if (err) { + dev_err(&udev->dev, "can't set config #%d, error %d\n", c, err); - /* This need not be fatal. The user can try to - * set other configurations. */ + /* This need not be fatal. The user can try to + * set other configurations. */ + } } } - /* USB device state == configured ... usable */ usb_notify_add_device(udev); @@ -203,8 +206,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg) */ if (!udev->parent) rc = hcd_bus_suspend(udev); + + /* Non-root devices don't need to do anything for FREEZE or PRETHAW */ + else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW) + rc = 0; else rc = usb_port_suspend(udev); + return rc; } |