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 4.8.                 January 2017                      USB_FREE_COHERENT(9)