centos man page for usb_free_coherent

USB_FREE_COHERENT(9)						   USB Core APIs					      USB_FREE_COHERENT(9)

NAME
       usb_free_coherent - free memory allocated with usb_alloc_coherent

SYNOPSIS
       void usb_free_coherent(struct usb_device * dev, size_t size, void * addr, dma_addr_t dma);

ARGUMENTS
       dev
	   device the buffer was used with

       size
	   requested buffer size

       addr
	   CPU address of buffer

       dma
	   DMA address of buffer

DESCRIPTION
       This reclaims an I/O buffer, letting it be reused. The memory must have been allocated using usb_alloc_coherent, and the parameters must
       match those provided in that allocation request.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      USB_FREE_COHERENT(9)