В сообщении от 12 сентября 2010 22:56:57 автор Andy Walls написал:
> Igor,
> 
> To help understand the problem with the TeVii S470 CX23885 MSI not
> working after module unload and reload, could you provide the output of
> 
> 	# lspci -d 14f1: -xxxx -vvvv
> 
> as root before the cx23885 module loads, after the module loads, and
> after the module is removed and reloaded?
> 
> please also provide the MSI IRQ number listed in dmesg
> (or /var/log/messages) assigned to the card.  Also the IRQ number of the
> unhandled IRQ when the module is reloaded.
> 
> The linux kernel should be writing the MSI IRQ vector into the PCI
> configuration space of the CX23885.  It looks like when you unload and
> reload the cx23885 module, it is not changing the vector.
> 
> Regards,
> Andy
Andy,
Error appears only and if you zap actual channel(interrupts actually calls).
First time module loaded and zapped some channel. At this point there is no errors.
/proc/interrupts shows some irq's for cx23885.
Then rmmod-insmod and szap again. Voilla! No irq vector.
/proc/interrupts shows zero irq calls for cx23885.
In my case Do_irq complains about irq 153, dmesq says cx23885 uses 45.

My first look not catch anything in lspci.
For now I'm using workaround - find register and bit in cx23885 to write to disable MSI registers.
In conjunction with particular card, naturally.

Regards
Igor