Can anyone tell me the difference between setup_irq and request_irq and if there is a difference is there a way to use request_irq instead of setup_irq in this module?

http://lxr.free-electrons.com/source...?v=2.6.28#L214

Hi -

Q: I assume you're probably getting a compile error (hence the question)?

Q: Have you tried adding "#include <linux/irq.h>"? Would that resolve the problem?

Q: Or is there some other reason you want to use "request_irq()"? If so, it would also be helpful to know your target platform and kernel version.

Kernel Version 2.6.28
including irq.h doesnt work at all because setup_irq is exported in
Linux/kernel/irq/manage.c
but compiling that gives me a new list of undefined symbols. So i thought using request_irq would be easier. /proc/interrupts tells me that everything is fine but after the time elapsed nothing happen and /proc/stat tells me the same --> Zero interrupts. Thats why i wanted to know if there are any differences between setup_irq and request_irq because thats the only thing i made different. I dont think thats really my problem but geode_mfgpt_set_irq returns 0 so thats ok too.

REad this till end: http://book.chinaunix.net/special/eb...-5-SECT-4.html

1 members found this post helpful.

If i am not mistaken it means setup_irq is part of request_irq, whitch means using request_irq is ok, whats bad because my mistake must be anywhere else...

Thanks for your help

Have you checked their parameters? Are they EXACTLY same?

Hi -

Q: Did you already resolve the problem? How?

Otherwise...
Good, but it would also be helpful to know the target platform and any (possibly relevant) build options.

If there's still an issue, then I believe that this is the main problem we need to focus on. Please cut/paste some of the error messages you get.

I found the problem but I didn´t find the solution. It has nothing to do with request_irq that works absolutly fine so this task is solved.

For everyone: request_irq does absolutly the same as setup_irq

With cmp2 everything works fine but I want to use cmp1. the code is ok but it doesnt work. I hope checking what he´s really writing to the register gives me the cloue whats wrong.