table of contents
| 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¶
| June 2024 | Kernel Hackers Manual 3.10 |