centos man page for hcd_buffer_create

HCD_BUFFER_CREATE(9)					       Host Controller APIs					      HCD_BUFFER_CREATE(9)

NAME
       hcd_buffer_create - initialize buffer pools

SYNOPSIS
       int hcd_buffer_create(struct usb_hcd * hcd);

ARGUMENTS
       hcd
	   the bus whose buffer pools are to be initialized

CONTEXT
       !in_interrupt

DESCRIPTION
       Call this as part of initializing a host controller that uses the dma memory allocators. It initializes some pools of dma-coherent memory
       that will be shared by all drivers using that controller.

       Call hcd_buffer_destroy to clean up after using those pools.

RETURN
       0 if successful. A negative errno value otherwise.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      HCD_BUFFER_CREATE(9)