MAX_VENDOR_REQ_CMD_SIZE   24 drivers/staging/rtl8188eu/include/usb_ops_linux.h #define MAX_USB_IO_CTL_SIZE	(MAX_VENDOR_REQ_CMD_SIZE + ALIGNMENT_UNIT)
MAX_VENDOR_REQ_CMD_SIZE  219 drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c 	if (len > MAX_VENDOR_REQ_CMD_SIZE) {