[RFC 2/8] cxgb4: setup pcie memory window 4 and create p2pmem region

[Sagi Grimberg]

> +static void setup_memwin_p2pmem(struct adapter *adap)
> +{
> +	unsigned int mem_base = t4_read_reg(adap, CIM_EXTMEM2_BASE_ADDR_A);
> +	unsigned int mem_size = t4_read_reg(adap, CIM_EXTMEM2_ADDR_SIZE_A);
> +
> +	if (!use_p2pmem)
> +		return;

This is weird, why even call this if !use_p2pmem?

> +static int init_p2pmem(struct adapter *adapter)
> +{
> +	unsigned int mem_size = t4_read_reg(adapter, CIM_EXTMEM2_ADDR_SIZE_A);
> +	struct p2pmem_dev *p;
> +	int rc;
> +	struct resource res;
> +
> +	if (!mem_size || !use_p2pmem)
> +		return 0;

Again, weird...