usb_ep_alloc_request - allocate a request object to use with this endpoint
2. SYNOPSIS ▲
struct usb_request * usb_ep_alloc_request(struct usb_ep * ep , gfp_t gfp_flags );
3. ARGUMENTS ▲
the endpoint to be used with with the request
GFP_* flags to use
4. DESCRIPTION ▲
Request objects must be allocated with this call, since they normally need controller-specific setup and may even need endpoint-specific resources such as allocation of DMA descriptors. Requests may be submitted with usb_ep_queue, and receive a single completion callback. Free requests with usb_ep_free_request, when they are no longer needed.
Returns the request, or null if one could not be allocated.
5. AUTHOR ▲
David Brownell <
6. COPYRIGHT ▲