linux-kernel - [PATCH 04/11] bus: stm32_firewall: allow check on different firewall controllers

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Message-ID: <20260109-debug_bus-v1-4-8f2142b5a738@foss.st.com>
Date: Fri, 9 Jan 2026 11:55:04 +0100
From: Gatien Chevallier <gatien.chevallier@...s.st.com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach
	<mike.leach@...aro.org>,
        James Clark <james.clark@...aro.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan
	<leo.yan@...ux.dev>,
        Clément Le Goffic
	<legoffic.clement@...il.com>,
        Linus Walleij <linusw@...nel.org>,
        "Maxime
 Coquelin" <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>
CC: <coresight@...ts.linaro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-gpio@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Gatien Chevallier <gatien.chevallier@...s.st.com>
Subject: [PATCH 04/11] bus: stm32_firewall: allow check on different
 firewall controllers

Current implementation restricts the check on the firewall controller
being the bus parent. Change this by using the controller referenced
in each firewall queries.

Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
---
 drivers/bus/stm32_firewall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/stm32_firewall.c b/drivers/bus/stm32_firewall.c
index 2fc9761dadec..2717754d811d 100644
--- a/drivers/bus/stm32_firewall.c
+++ b/drivers/bus/stm32_firewall.c
@@ -274,7 +274,7 @@ int stm32_firewall_populate_bus(struct stm32_firewall_controller *firewall_contr
 		}
 
 		for (i = 0; i < len; i++) {
-			if (firewall_controller->grant_access(firewall_controller,
+			if (firewall_controller->grant_access(firewalls[i].firewall_ctrl,
 							      firewalls[i].firewall_id)) {
 				/*
 				 * Peripheral access not allowed or not defined.

-- 
2.43.0