USB_FREE_COHERENT(9) USB Core APIs USB_FREE_COHERENT(9)NAMEusb_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.
COPYRIGHTKernel Hackers Manual 3.8. June 2014 USB_FREE_COHERENT(9)