@@ -53,59 +53,6 @@ usb_descriptor_fillbuf(void *buf, unsigned buflen,
}
EXPORT_SYMBOL_GPL(usb_descriptor_fillbuf);
-/**
- * usb_gadget_config_buf - builts a complete configuration descriptor
- * @config: Header for the descriptor, including characteristics such
- * as power requirements and number of interfaces.
- * @buf: Buffer for the resulting configuration descriptor.
- * @length: Length of buffer. If this is not big enough to hold the
- * entire configuration descriptor, an error code will be returned.
- * @desc: Null-terminated vector of pointers to the descriptors (interface,
- * endpoint, etc) defining all functions in this device configuration.
- *
- * This copies descriptors into the response buffer, building a descriptor
- * for that configuration. It returns the buffer length or a negative
- * status code. The config.wTotalLength field is set to match the length
- * of the result, but other descriptor fields (including power usage and
- * interface count) must be set by the caller.
- *
- * Gadget drivers could use this when constructing a config descriptor
- * in response to USB_REQ_GET_DESCRIPTOR. They will need to patch the
- * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
- */
-int usb_gadget_config_buf(
- const struct usb_config_descriptor *config,
- void *buf,
- unsigned length,
- const struct usb_descriptor_header **desc
-)
-{
- struct usb_config_descriptor *cp = buf;
- int len;
-
- /* config descriptor first */
- if (length < USB_DT_CONFIG_SIZE || !desc)
- return -EINVAL;
- *cp = *config;
-
- /* then interface/endpoint/class/vendor/... */
- len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8 *)buf,
- length - USB_DT_CONFIG_SIZE, desc);
- if (len < 0)
- return len;
- len += USB_DT_CONFIG_SIZE;
- if (len > 0xffff)
- return -EINVAL;
-
- /* patch up the config descriptor */
- cp->bLength = USB_DT_CONFIG_SIZE;
- cp->bDescriptorType = USB_DT_CONFIG;
- cp->wTotalLength = cpu_to_le16(len);
- cp->bmAttributes |= USB_CONFIG_ATT_ONE;
- return len;
-}
-EXPORT_SYMBOL_GPL(usb_gadget_config_buf);
-
/**
* usb_copy_descriptors - copy a vector of USB descriptors
* @src: null-terminated vector to copy
@@ -860,10 +860,6 @@ container_of(str_item, struct gadget_string, item)
int usb_descriptor_fillbuf(void *, unsigned,
const struct usb_descriptor_header **);
-/* build config descriptor from single descriptor vector */
-int usb_gadget_config_buf(const struct usb_config_descriptor *config,
- void *buf, unsigned buflen, const struct usb_descriptor_header **desc);
-
/* copy a NULL-terminated vector of descriptors */
struct usb_descriptor_header **usb_copy_descriptors(
struct usb_descriptor_header **);