Re: A serial port conundrum

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Hello!

On Fri, 28 Feb 2003, Nikhil Nair wrote:

> Dear all,

[Fifo problems on serial device.]

> Possible solutions:
>
> a)  Hack the serial driver to use the FIFO for input but ignore it for
> output (as if the UART is a cross between a 16550A and a 16450); I don't
> understand enough about the low-level stuff to know if this is possible -
> it would mean delving deep into drivers/char/serial.c in the kernel, I
> would imagine.
>
> b)  Raise the priority of serial interrupts, and leave the FIFO off.  I
> don't know how to go about doing this, or what the dangers might be...
>
> Any thoughts, suggestions, advice etc. would be much appreciated!

c) Can you activate DMA for the cdrom? This reduces the cpu load. Most
modern cdroms support DMA.

	Roger




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