ethdev: explicit cast of queue count return

GCC 8.1 produces a warning:
rte_ethdev.h: In function 'rte_eth_rx_queue_count':
rte_ethdev.h:3882:10: warning: conversion to 'int' from 'uint32_t'
{aka 'unsigned int'} may change the sign of the result [-Wsign-conversion]
  return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
         ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: 33cf6be04d60 ("ethdev: add sanity checks to functions")
Cc: stable@dpdk.org
Signed-off-by: Andy Green <andy@warmcat.com>

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index f8815e9..d52c1be 100644 (file)
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -3874,7 +3874,7 @@ rte_eth_rx_queue_count(uint16_t port_id, uint16_t queue_id)
        if (queue_id >= dev->data->nb_rx_queues)
                return -EINVAL;
 
-       return (*dev->dev_ops->rx_queue_count)(dev, queue_id);
+       return (int)(*dev->dev_ops->rx_queue_count)(dev, queue_id);
 }
 
 /**