mbox_flush        310 drivers/mailbox/mailbox.c EXPORT_SYMBOL_GPL(mbox_flush);
mbox_flush         60 drivers/tty/serial/tegra-tcu.c 	mbox_flush(tcu->tx, 1000);
mbox_flush         44 include/linux/mailbox_client.h int mbox_flush(struct mbox_chan *chan, unsigned long timeout);