[LinuxPPS] do we need hardpps <- yes!!

[Udo van den Heuvel]

On 2010-02-07 07:13, Udo van den Heuvel wrote:
> So how come?

Because they are on one interrupt:

# setserial /dev/ttyS0
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 3, Flags: low_latency
# setserial /dev/ttyS1
/dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3
# setserial /dev/ttyS2
/dev/ttyS2, UART: 16550A, Port: 0x0a80, IRQ: 3
# setserial /dev/ttyS3
/dev/ttyS3, UART: 16550A, Port: 0x0a88, IRQ: 3