[dpdk-dev] [PATCH v3 06/12] eal: pci: vfio: add rd/wr func for pci bar space

[Stephen Hemminger]

On Thu,  7 Jan 2016 22:03:03 +0530
Santosh Shukla <sshukla at mvista.com> wrote:

>  
> +int rte_eal_pci_read_bar(const struct rte_pci_device *device __rte_unused,
> +			 void *buf __rte_unused,
> +			 size_t len __rte_unused,
> +			 off_t offset __rte_unused,
> +			 int bar_idx __rte_unused)
> +{
> +#ifdef VFIO_PRESENT
> +	const struct rte_intr_handle *intr_handle = &device->intr_handle;
> +	return pci_vfio_read_bar(intr_handle, buf, len, offset, bar_idx);
> +#else
> +	return 0; /* UIO's not applicable */
> +#endif
> +}

It seems wrong to declare all the parameters as unused but then use them.
Maybe there is a way to have a macro for USED(x) in the #else case