I was confused about the type of address you were using. Seems to be a memory mapped card then. Anyhow if you will get that problem solved and run into problems with the can card.....let me know Heinz ----- Original Message ----- From: "David Olofson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, August 23, 2001 5:56 PM Subject: Re: [rtl] rtlcan200+pcm3680+rtlinux-3.1 : kernal paging error > On Thursday 23 August 2001 02:57, KC Lim wrote: > > > 2. Hard coded the address 0xDA000000 and irq 10 > > This seems to be a *physical* address, and as such, you you must > explicitly map into the virtual address space to use it. > > I'm not up to date with 2.4.x and how to do this the right way, so you'll > have to ask someone else about the details. :-) > > > > Unable to handle kernel paging request at virtual address da000000 > > This means that no memory was mapped at 0xda000000 in the virtual address > space when you tried to read or write that address. (It's pretty much > what you'd call a "segfault" in user space.) > > > [...] > > > When I do a lsmod, it shown that the module is initializing. > > Then you know the module "crashed" in init_module(). (The kernel assumes > that the module is busy because the init function never returns.) > > > > My question are: > > 1. What does the message mean? how to interpret the message? > > See above. The rest is just a dump of the CPU registers, stack, code and > some other stuff right after the page fault was trapped. > > > > 2. What else do I need to change the code? > > See above. > > > > 3. Is there a way to rmmod the module if it is busy ,beside rebooting > > the machine? > > You could probably fiddle with the module usecount to make it appear to > be unused again, but be aware that it's very likely to blow up in your > face. The usecount is there to make sure that no one unloads stuff that > someone else is using. > > > //David Olofson --- Programmer, Reologica Instruments AB > > .- M A I A -------------------------------------------------. > | Multimedia Application Integration Architecture | > | A Free/Open Source Plugin API for Professional Multimedia | > `----------------------------> http://www.linuxdj.com/maia -' > .- David Olofson -------------------------------------------. > | Audio Hacker - Open Source Advocate - Singer - Songwriter | > `--------------------------------------> [EMAIL PROTECTED] -' > > -- [rtl] --- > To unsubscribe: > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] > -- > For more information on Real-Time Linux see: > http://www.rtlinux.org/ > -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] -- For more information on Real-Time Linux see: http://www.rtlinux.org/
