[dpdk-stable] patch 'vhost: fix error code check when creating thread' has been queued to LTS release 17.11.1

[Yuanhan Liu]

Hi,

FYI, your patch has been queued to LTS release 17.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 01/26/18. So please
shout if anyone has objections.

Thanks.

	--yliu

---
>From 12c0a0276118fa3db7cc8d9329eb024a29fa2f5c Mon Sep 17 00:00:00 2001
From: Olivier Matz <olivier.matz at 6wind.com>
Date: Fri, 8 Dec 2017 11:19:49 +0100
Subject: [PATCH] vhost: fix error code check when creating thread

[ upstream commit da51d2f6b8b652da8eb9d4b50df4f3f5a24b656f ]

On error, pthread_create() returns a positive number (errno).
Fix the test on the return value.

Fixes: af1475918124 ("vhost: introduce API to start a specific driver")
Fixes: e623e0c6d8a5 ("vhost: add reconnect ability")

Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Reviewed-by: Jens Freimann <jfreimann at redhat.com>
---
 lib/librte_vhost/socket.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c
index 422da00..811e6bf 100644
--- a/lib/librte_vhost/socket.c
+++ b/lib/librte_vhost/socket.c
@@ -472,7 +472,7 @@ vhost_user_reconnect_init(void)
 
 	ret = pthread_create(&reconn_tid, NULL,
 			     vhost_user_client_reconnect, NULL);
-	if (ret < 0) {
+	if (ret != 0) {
 		RTE_LOG(ERR, VHOST_CONFIG, "failed to create reconnect thread");
 		if (pthread_mutex_destroy(&reconn_list.mutex)) {
 			RTE_LOG(ERR, VHOST_CONFIG,
@@ -678,9 +678,8 @@ rte_vhost_driver_register(const char *path, uint64_t flags)
 	if ((flags & RTE_VHOST_USER_CLIENT) != 0) {
 		vsocket->reconnect = !(flags & RTE_VHOST_USER_NO_RECONNECT);
 		if (vsocket->reconnect && reconn_tid == 0) {
-			if (vhost_user_reconnect_init() < 0) {
+			if (vhost_user_reconnect_init() != 0)
 				goto out_mutex;
-			}
 		}
 	} else {
 		vsocket->is_server = true;
@@ -837,7 +836,7 @@ rte_vhost_driver_start(const char *path)
 	if (fdset_tid == 0) {
 		int ret = pthread_create(&fdset_tid, NULL, fdset_event_dispatch,
 				     &vhost_user.fdset);
-		if (ret < 0)
+		if (ret != 0)
 			RTE_LOG(ERR, VHOST_CONFIG,
 				"failed to create fdset handling thread");
 	}
-- 
2.7.4