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From: Thomas Monjalon <thomas@monjalon.net>
To: Andy Green <andy@warmcat.com>
Cc: dev@dpdk.org
Date: Sun, 13 May 2018 16:58:34 +0200
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Subject: Re: [dpdk-dev] [PATCH v3 02/24] lib/librte_ethdev: change
	eth-dev-ops API to return int
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12/05/2018 03:58, Andy Green:
> Signed-off-by: Andy Green <andy@warmcat.com>
[...]
> --- a/lib/librte_ethdev/rte_ethdev_core.h
> +++ b/lib/librte_ethdev/rte_ethdev_core.h
> -typedef uint32_t (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
> -					 uint16_t rx_queue_id);
> +typedef int (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
> +				    uint16_t rx_queue_id);
>  /**< @internal Get number of used descriptors on a receive queue. */

What is the reason of this change?