[dpdk-stable] patch 'bus/dpaa: do nothing if bus not present' has been queued to LTS release 18.11.1

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 01/11/19. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Thanks.

Kevin Traynor

---
>From 485f48f8cc5a179dc2bb8c2dc86a16b43f50129d Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen at networkplumber.org>
Date: Wed, 5 Dec 2018 14:02:30 -0800
Subject: [PATCH] bus/dpaa: do nothing if bus not present

[ upstream commit f18e18e0ccf7d3cb08042ad77074e1cbd070555d ]

The DPAA bus support code put out messages like:
	dpaax: read_memory_node():	 Unable to glob device-tree memory node:
		(/proc/device-tree/memory[@0-9]*/reg)(3)
	dpaax: PA->VA translation not available;
	dpaax: Expect performance impact.

These are unnecessary and likely to confuse the end user.
Fix this by doing nothing if bus is empty.

Fixes: 5a7dbb934d75 ("dpaa: enable dpaax library")

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
Acked-by: Shreyansh Jain <shreyansh.jain at nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index 203f60dc1..204a50b1e 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -543,4 +543,8 @@ rte_dpaa_bus_probe(void)
 	int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 
+	/* If DPAA bus is not present nothing needs to be done */
+	if (TAILQ_EMPTY(&rte_dpaa_bus.device_list))
+		return 0;
+
 	svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 	if (svr_file) {
@@ -587,6 +591,5 @@ rte_dpaa_bus_probe(void)
 	 * been detected.
 	 */
-	if (!TAILQ_EMPTY(&rte_dpaa_bus.device_list))
-		rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
+	rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 
 	return 0;
-- 
2.19.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-01-04 13:23:07.624988453 +0000
+++ 0007-bus-dpaa-do-nothing-if-bus-not-present.patch	2019-01-04 13:23:07.000000000 +0000
@@ -1,8 +1,10 @@
-From f18e18e0ccf7d3cb08042ad77074e1cbd070555d Mon Sep 17 00:00:00 2001
+From 485f48f8cc5a179dc2bb8c2dc86a16b43f50129d Mon Sep 17 00:00:00 2001
 From: Stephen Hemminger <stephen at networkplumber.org>
 Date: Wed, 5 Dec 2018 14:02:30 -0800
 Subject: [PATCH] bus/dpaa: do nothing if bus not present
 
+[ upstream commit f18e18e0ccf7d3cb08042ad77074e1cbd070555d ]
+
 The DPAA bus support code put out messages like:
 	dpaax: read_memory_node():	 Unable to glob device-tree memory node:
 		(/proc/device-tree/memory[@0-9]*/reg)(3)
@@ -13,7 +15,6 @@
 Fix this by doing nothing if bus is empty.
 
 Fixes: 5a7dbb934d75 ("dpaa: enable dpaax library")
-Cc: stable at dpdk.org
 
 Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
 Acked-by: Shreyansh Jain <shreyansh.jain at nxp.com>