[PARPORT] Re: [PATCH] to drivers/parport/ieee1284_ops.c to fix timing dependent hang

From: Tim Josling (tej@melbpc.org.au)
Date: Sat Mar 22 2003 - 04:23:44 EST

  • Next message: Tim Josling: "[PARPORT] Re: [PATCH] to drivers/parport/ieee1284_ops.c to fix timing dependent hang"


    Good to know someone has read my email.

    According to my reading of the code, it should only happen in polled
    mode, but I have only one week of experience looking at kernel source.

    So it should be a work-around, assuming interrupts work on the parallel
    port on your system :-). It is an very vexing problem, as I'm sure you know.

    By the way, LJ1100s tend to get page feeding problems about the time the
    warranty runs out, but HP has a free kit you can order to fix the problem.

    Tim Josling

    Jeremy Fitzhardinge wrote:
    > On Wed, 2003-03-19 at 00:08, Tim Josling wrote:
    >>I have an HP1100 printer and since I upgraded to a faster CPU the
    >>printer has started hanging. The problem persisteed across 2.0 2.2 and
    >>2.4 kernel versions. I am running Red Hat Linux 8.0 on a Compaq Armada E500.
    >>The problem occurs intermittently. The symptom is that the 'buffer
    >>contains data' light stays on on the printer, but data transfer stops.
    > Ah, so that's why that happens. I've been getting the same thing with
    > my LJ1100.
    > Is this just in polled mode? Does using interrupts constitute a
    > work-around for the hang?
    > J

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