usb_free_coherent (9) - Linux Manuals

usb_free_coherent: free memory allocated with usb_alloc_coherent

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.

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