Fixing the below error by returning from the function early
when count == 0.
Issue flagged by GCC 7.1.1
examples/vhost/virtio_net.c:370:38: error: ‘desc_indexes[0]’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
rte_prefetch0(&vr->desc[desc_indexes[0]]);
Fixes: ca059fa5e290 ("examples/vhost: demonstrate the new generic APIs")
Cc: sta...@dpdk.org
Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
---
examples/vhost/virtio_net.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/examples/vhost/virtio_net.c b/examples/vhost/virtio_net.c
index cc2c3d882..5e1ed44a5 100644
--- a/examples/vhost/virtio_net.c
+++ b/examples/vhost/virtio_net.c
@@ -350,6 +350,9 @@ vs_dequeue_pkts(struct vhost_dev *dev, uint16_t queue_id,
count = RTE_MIN(count, MAX_PKT_BURST);
count = RTE_MIN(count, free_entries);
+ if (unlikely(count == 0))
+ return 0;
+
/*
* Retrieve all of the head indexes first and pre-update used entries
* to avoid caching issues.
@@ -385,8 +388,6 @@ vs_dequeue_pkts(struct vhost_dev *dev, uint16_t queue_id,
}
}
- if (!i)
- return 0;
queue->last_avail_idx += i;
queue->last_used_idx += i;
--
2.13.0
