diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/usb/ch9.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 1ded281eff88..f32a64e57f97 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -868,6 +868,18 @@ enum usb_device_speed { USB_SPEED_SUPER, /* usb 3.0 */ }; +#ifdef __KERNEL__ + +/** + * usb_speed_string() - Returns human readable-name of the speed. + * @speed: The speed to return human-readable name for. If it's not + * any of the speeds defined in usb_device_speed enum, string for + * USB_SPEED_UNKNOWN will be returned. + */ +extern const char *usb_speed_string(enum usb_device_speed speed); + +#endif + enum usb_device_state { /* NOTATTACHED isn't in the USB spec, and this state acts * the same as ATTACHED ... but it's clearer this way. |