Re: PCI configuration changes getting lost.

From: Martin Mares
Date: Thu Jul 15 2004 - 14:51:27 EST


Hello!

> The BIOS puts junk (0xFF) in the INTERRUPT_LINE register of the PCMCIA
> configuration registers. I can put the correct value (0x05) in with
> 'setpci', but the information is not propagated to the /proc space.
> The information is not preserved after an 'init 6'.

The INTERRUPT_LINE register doesn't affect interrupt routing a single bit,
it's merely a scratch pad register used for passing the interrupt
number from BIOS to the drivers (or Linux kernel in this case).

BTW which kernel do you use?

What do the boot-up messages say?

Have a nice fortnight
--
Martin `MJ' Mares <mj@xxxxxx> http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
Lottery -- a tax on people who can't do math.
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