Re: [patch 3/6] scsi, fnic: require DMA support for Cisco FNIC

[Roland Dreier]

On Wed, May 25, 2011 at 1:04 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>> The Cisco FNIC driver requires creating a SLAB_CACHE_DMA cache, which is
>> not possible if CONFIG_ZONE_DMA is disasbled.  Avoid compiling it without
>> DMA support.
>
> And you're sure it actually needs it and isn't some sort of typo?  It
> might help to Cc the maintainer to figure that out.

Yes, almost certainly it is due to a misunderstanding of what
SLAB_CACHE_DMA means.
(fnic is a modern PCIe device that doesn't have 24-bit DMA restrictions ;)

So the correct fix would likely be to delete the SLAB_CACHE_DMA from the driver.

In any case cc'ing Cisco people as hch suggested...

 - R.
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