[PATCH] NVMe:Support for Host Memory Buffer(HMB)

[Keith Busch]

On Fri, Jun 10, 2016 at 07:09:24PM +0530, Arnav Dawn wrote:
> +		if (hmb_allocated < (dev->hmb.host_mem_min << 10))
> +			goto release_hmb;

The spec allows HMMIN be 0, meaning no minimum requirement, so need to
account for that.