The Linux-USB Host Side API
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usb_buffer_free

Name

usb_buffer_free -- free memory allocated with usb_buffer_alloc

Synopsis

void usb_buffer_free (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_buffer_alloc, and the parameters must match those provided in that allocation request.

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