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

Jeremy Fitzhardinge
2003-03-22T17:35:43Z

On Sat, 2003-03-22 at 01:23, Tim Josling wrote:
> 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.

I'm wondering if a better fix might be to have something like:

if (wait * 2 > wait)
wait *= 2;

at the bottom of the loop, so that the wrap-around doesn't happen.

> 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.

Yes, I just installed it. It suddenly made the printer useful again, so
I've printing more, and seeing the hangs. I enabled interrupts, which
seems to work OK.

J