USB_FIND_ENDPOINT(9) Kernel Mode Gadget API USB_FIND_ENDPOINT(9)NAME
usb_find_endpoint - find a copy of an endpoint descriptor
SYNOPSIS
struct usb_endpoint_descriptor * usb_find_endpoint(struct usb_descriptor_header ** src, struct usb_descriptor_header ** copy,
struct usb_endpoint_descriptor * match);
ARGUMENTS
src
original vector of descriptors
copy
copy of src
match
endpoint descriptor found in src
DESCRIPTION
This returns the copy of the match descriptor made for copy. Its intended use is to help remembering the endpoint descriptor to use when
enabling a given endpoint.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_FIND_ENDPOINT(9)
Check Out this Related Man Page
USB_GADGET_CONFIG_BU(9) Kernel Mode Gadget API USB_GADGET_CONFIG_BU(9)NAME
usb_gadget_config_buf - builts a complete configuration descriptor
SYNOPSIS
int usb_gadget_config_buf(const struct usb_config_descriptor * config, void * buf, unsigned length,
const struct usb_descriptor_header ** desc);
ARGUMENTS
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.
DESCRIPTION
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.
AUTHOR
David Brownell <dbrownell@users.sourceforge.net>
Author.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 USB_GADGET_CONFIG_BU(9)
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