Re: PCIE

[Manu Abraham <abraham.manu@gmail.com>]

Roland Dreier wrote:

> Why does the device come up in a state where it generates a stream of
> interrupts as soon as you enable the PCI device?  That's somewhat
> unusual behavior, although certainly not unheard of.
> 

In fact the device wasn't generating a stream of interrupts when loaded
(i guess). It was just that the shared handler was showing all the
interrupts that occurred, since i was not looking at the interrupt
mask/status.

But accessing any registers caused me a flood of interrupts, which froze
the system. excessive printing to the console caused a lockup.

I am now wondering whether the usage of MSI would help in this case and
that i should be using enable_msi before request_irq ?

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