Hi! I noticed a problem in 8250.c. My board has only one UART port, and is 16550 compatible, so in function serial8250_interrupt I see that serial_in function is called twice. Second time, code "else if (end == NULL)" is executed and function return IRQ_NONE. This causes an entry in /proc/irq/spurious: count 239 unhandled 1 last_unhandled 4294700846 ms But this is not a spurious interrupt. Regards.
