Re: [PATCH 1/2] msi: Invert the sense of the MSI enables.

From: Roland Dreier
Date: Fri May 25 2007 - 11:42:50 EST


> > - In spec hardware does not require MSI to generate interrupts
> > Which leaves enabling MSI optional.
>
> Actually at least the Qlogic/Pathscale PCI Express ipath adapters
> cannot generate INTx interrupts -- they definitely do require MSI to
> operate.

Oh yeah... when I first found out about this, I rechecked the PCI
Express spec and found that in fact legacy INTx interrupts are
optional. So the ipath adapters that require MSI do conform to the
spec.

- R.
-
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