linux-kernel - [PATCH] arch: powerpc: ps3: Make ps3_system_bus

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Message-ID: <20250918114840.53581-1-abarnas@google.com>
Date: Thu, 18 Sep 2025 11:48:40 +0000
From: "Adrian Barnaś" <abarnas@...gle.com>
To: Geoff Levand <geoff@...radead.org>, Madhavan Srinivasan <maddy@...ux.ibm.com>, 
	Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, 
	Christophe Leroy <christophe.leroy@...roup.eu>, linuxppc-dev@...ts.ozlabs.org, 
	linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	"Adrian Barnaś" <abarnas@...gle.com>
Subject: [PATCH] arch: powerpc: ps3: Make ps3_system_bus_type const

Because driver core can properly handle constant struct bus_type,
move the ps3_system_bus_type to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Signed-off-by: Adrian Barnaś <abarnas@...gle.com>
---
 arch/powerpc/platforms/ps3/system-bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index afbaabf182d0..c5b880c411ef 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -465,7 +465,7 @@ static struct attribute *ps3_system_bus_dev_attrs[] = {
 };
 ATTRIBUTE_GROUPS(ps3_system_bus_dev);
 
-static struct bus_type ps3_system_bus_type = {
+static const struct bus_type ps3_system_bus_type = {
 	.name = "ps3_system_bus",
 	.match = ps3_system_bus_match,
 	.uevent = ps3_system_bus_uevent,
-- 
2.51.0.470.ga7dc726c21-goog