serial8250_handle_irq
return serial8250_handle_irq(p, iir);
ret |= serial8250_handle_irq(p, serial_port_in(p, UART_IIR));
ret |= serial8250_handle_irq(p, serial_port_in(p, UART_IIR));
ret = serial8250_handle_irq(port, iir);
EXPORT_SYMBOL_GPL(serial8250_handle_irq);
return serial8250_handle_irq(port, iir);
return serial8250_handle_irq(port, iir);
int serial8250_handle_irq(struct uart_port *port, unsigned int iir);