Re: [2.6.7] Ehci controller interrupts like crazy on nforce2

Daniel Schmitt
2004-07-11T12:09:14Z

On Friday 09 July 2004 03:16, Jonathan Filiatrault wrote:
> Here it is: another nforce2 hardware bug. The ehci controller seems to
> send a massive number of interrupts to the kernel (264379 per second).
> This uses about 5 to 10% of the cpu. This shows up in top in the
> "hi"(hard interrupts) indicator. Nothing unusual shows up in the kernel
> log. My system has an Asus A7N8X Nforce2 Board with an Athlon XP 2800+
> mounted on it.

I've seen this problem on my board (Epox 8RDA3+) as well. The root cause seems
to be interrupt link devices enabled without regard for the actual device
status. A recent patch that delayed IRQ assignment to device activiation time
fixed this for me; you might want to try a fresh -mm or -bk kernel.

Hope that helps,

Daniel.