snd_mpu401_uart_interrupt_tx  113 include/sound/mpu401.h irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
snd_mpu401_uart_interrupt_tx  151 sound/drivers/mpu401/mpu401_uart.c EXPORT_SYMBOL(snd_mpu401_uart_interrupt_tx);