Re: 4.13.0-rc4 sparc64: can't allocate MSI-X affinity masks for 2 vectors

[Christoph Hellwig]

On Mon, Aug 21, 2017 at 01:35:49PM -0700, David Miller wrote:
> I ask because the commit log message indicates that this failure is
> not expected to ever happen on SMP.

I fear my commit message (but not the code) might be wrong.
irq_create_affinity_masks can return NULL any time we don't have any
affinity masks.  I've already had a discussion about this elsewhere
with Bjorn, and I suspect we need to kill the warning or move it
to irq_create_affinity_masks only for genuine failure cases.

> 
> We really need to root cause this.
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