Possible bug in 8250.c

[Ivica Mikec]

 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.
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