HS_USB_PKT_SIZE
dev->burst_cap = HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
buf = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
#define DEFAULT_HS_BURST_CAP_SIZE (16 * 1024 + 5 * HS_USB_PKT_SIZE)
burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;