USB_BUFFER_UNMAP(9)                       USB Core APIs                       USB_BUFFER_UNMAP(9)



NAME
       usb_buffer_unmap - free DMA mapping(s) for an urb

SYNOPSIS
       void usb_buffer_unmap(struct urb * urb);

ARGUMENTS
       urb
           urb whose transfer_buffer will be unmapped

DESCRIPTION
       Reverses the effect of usb_buffer_map.

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