[PATCH v2 08/18] bus/dpaa: fix device probe issue

[Hemant Agrawal]

From: Gagandeep Singh <g.singh at nxp.com>

Remove an unintended early return in the LS1043 SoC version check
that was preventing device probing from completing successfully on
LS1043A platforms.

The early return did two things: set max_push_rxq_num = 0 and skip
the DPAA_PUSH_QUEUES_NUMBER env-var override. With the return gone,
the env-var could inadvertently re-enable push mode on LS1043A, which
must remain disabled due to the FMAN push-mode errata handled in
dpaa_rxtx.c. Guard the env-var override so it only applies to
non-LS1043A SoCs.

Fixes: 164e9e13e50f ("bus/dpaa: enhance SoC version")
Cc: stable at dpdk.org

Signed-off-by: Gagandeep Singh <g.singh at nxp.com>
---
 drivers/bus/dpaa/dpaa_bus.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c
index ee467b94d5..02a8c5882e 100644
--- a/drivers/bus/dpaa/dpaa_bus.c
+++ b/drivers/bus/dpaa/dpaa_bus.c
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  *
- * Copyright 2017-2025 NXP
+ * Copyright 2017-2026 NXP
  *
  */
 /* System headers */
@@ -724,18 +724,17 @@ rte_dpaa_bus_scan(void)
 			dpaa_bus.svr_ver);
 	}
 
-	/* Disabling the default push mode for LS1043A */
+	/* Disabling the default push mode for LS1043A due to errata */
 	if (dpaa_bus.svr_ver == SVR_LS1043A_FAMILY) {
 		dpaa_bus.max_push_rxq_num = 0;
-		return 0;
+	} else {
+		penv = getenv("DPAA_PUSH_QUEUES_NUMBER");
+		if (penv)
+			dpaa_bus.max_push_rxq_num = atoi(penv);
+		if (dpaa_bus.max_push_rxq_num > DPAA_MAX_PUSH_MODE_QUEUE)
+			dpaa_bus.max_push_rxq_num = DPAA_MAX_PUSH_MODE_QUEUE;
 	}
 
-	penv = getenv("DPAA_PUSH_QUEUES_NUMBER");
-	if (penv)
-		dpaa_bus.max_push_rxq_num = atoi(penv);
-	if (dpaa_bus.max_push_rxq_num > DPAA_MAX_PUSH_MODE_QUEUE)
-		dpaa_bus.max_push_rxq_num = DPAA_MAX_PUSH_MODE_QUEUE;
-
 	/* Device list creation is only done once */
 	if (!process_once) {
 		rte_dpaa_bus_dev_build();
-- 
2.43.0