int mem_flags, 
unsigned mem_flags, 
void *usb_buffer_alloc (	struct usb_device *dev,	size_t size,	int mem_flags,	dma_addr_t *dma){	if (!dev || !dev->bus || !dev->bus->op || !dev->bus->op->buffer_alloc)		return NULL;	return dev->bus->op->buffer_alloc (dev->bus, size, mem_flags, dma);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/5db539e49fc7471e23bf3c94ca304f008cb7b7f3/usb.c/buggy/drivers/usb/core/usb.c