patch 'bus/fslmc: fix devargs not propagated on hotplug' has been queued to stable release 25.11.1

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 25.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 04/03/26. 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.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/bc9db633ab739ee8ee2874fe26d6be709e08f2be

Thanks.

Kevin

---
>From bc9db633ab739ee8ee2874fe26d6be709e08f2be Mon Sep 17 00:00:00 2001
From: Maxime Leroy <maxime at leroys.fr>
Date: Wed, 25 Mar 2026 21:45:33 +0100
Subject: [PATCH] bus/fslmc: fix devargs not propagated on hotplug

[ upstream commit 10f30d4d32f1252d7485db1714c3c96630b77217 ]

When a device is hotplugged via rte_dev_probe(), the EAL adds the
devargs to its global list before calling the bus scan and then probe.
However, when the fslmc bus is rescanned, it returns early without
refreshing devargs on existing devices.

As a result, PMD-specific devargs (e.g. drv_no_taildrop) passed
through rte_dev_probe() are silently ignored by the driver.

Refresh devargs from the EAL list on all existing devices when rescan
is triggered, before returning early.

Fixes: b5721f271cbf ("bus/fslmc: support DPNI hotplug")

Signed-off-by: Maxime Leroy <maxime at leroys.fr>
Acked-by: Hemant Agrawal <hemant.agrawal at nxp.com>
---
 drivers/bus/fslmc/fslmc_bus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index abdb0ad50d..d058441a3f 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -323,5 +323,9 @@ rte_fslmc_scan(void)
 
 	if (process_once) {
+		struct rte_dpaa2_device *dev;
+
 		DPAA2_BUS_DEBUG("Fslmc bus already scanned. Not rescanning");
+		TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next)
+			dev->device.devargs = fslmc_devargs_lookup(dev);
 		return 0;
 	}
-- 
2.53.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-04-01 12:56:52.273188596 +0100
+++ 0009-bus-fslmc-fix-devargs-not-propagated-on-hotplug.patch	2026-04-01 12:56:52.015268154 +0100
@@ -1 +1 @@
-From 10f30d4d32f1252d7485db1714c3c96630b77217 Mon Sep 17 00:00:00 2001
+From bc9db633ab739ee8ee2874fe26d6be709e08f2be Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 10f30d4d32f1252d7485db1714c3c96630b77217 ]
+
@@ -18 +19,0 @@
-Cc: stable at dpdk.org