USB_ALLOC_STREAMS(9)                   Host Controller APIs                  USB_ALLOC_STREAMS(9)



NAME
       usb_alloc_streams - allocate bulk endpoint stream IDs.

SYNOPSIS
       int usb_alloc_streams(struct usb_interface * interface, struct usb_host_endpoint ** eps,
                             unsigned int num_eps, unsigned int num_streams, gfp_t mem_flags);

ARGUMENTS
       interface
           alternate setting that includes all endpoints.

       eps
           array of endpoints that need streams.

       num_eps
           number of endpoints in the array.

       num_streams
           number of streams to allocate.

       mem_flags
           flags hcd should use to allocate memory.

DESCRIPTION
       Sets up a group of bulk endpoints to have num_streams stream IDs available. Drivers may
       queue multiple transfers to different stream IDs, which may complete in a different order
       than they were queued.

RETURN
       On success, the number of allocated streams. On failure, a negative error code.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      USB_ALLOC_STREAMS(9)