diff options
Diffstat (limited to 'drivers/usb/core/generic.c')
| -rw-r--r-- | drivers/usb/core/generic.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index 69ecd3c9231..358ca8dd784 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -47,6 +47,9 @@ int usb_choose_configuration(struct usb_device *udev) int insufficient_power = 0; struct usb_host_config *c, *best; + if (usb_device_is_owned(udev)) + return 0; + best = NULL; c = udev->config; num_configs = udev->descriptor.bNumConfigurations; @@ -97,7 +100,7 @@ int usb_choose_configuration(struct usb_device *udev) */ /* Rule out configs that draw too much bus current */ - if (c->desc.bMaxPower * 2 > udev->bus_mA) { + if (usb_get_max_power(udev, c) > udev->bus_mA) { insufficient_power++; continue; } @@ -152,6 +155,7 @@ int usb_choose_configuration(struct usb_device *udev) } return i; } +EXPORT_SYMBOL_GPL(usb_choose_configuration); static int generic_probe(struct usb_device *udev) { @@ -160,15 +164,13 @@ 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. */ - if (usb_device_is_owned(udev)) - ; /* Don't configure if the device is owned */ - else if (udev->authorized == 0) + 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) { + if (err && err != -ENODEV) { dev_err(&udev->dev, "can't set config #%d, error %d\n", c, err); /* This need not be fatal. The user can try to |