| usb_free_coherent(9) - phpMan
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)
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