linux-kernel - [PATCH 3/4] powerpc: pseries: make cmm

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Message-Id: <20240204-bus_cleanup-powerpc-v1-3-c763f0e142e9@marliere.net>
Date: Sun, 04 Feb 2024 11:21:57 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Arnd Bergmann <arnd@...db.de>, Michael Ellerman <mpe@...erman.id.au>, 
 Nicholas Piggin <npiggin@...il.com>, 
 Christophe Leroy <christophe.leroy@...roup.eu>, 
 Geoff Levand <geoff@...radead.org>
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 3/4] powerpc: pseries: make cmm_subsys const

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

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 arch/powerpc/platforms/pseries/cmm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 5f4037c1d7fe..6307dacc3862 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -375,7 +375,7 @@ static struct device_attribute *cmm_attrs[] = {
 static DEVICE_ULONG_ATTR(simulate_loan_target_kb, 0644,
 			 simulate_loan_target_kb);

-static struct bus_type cmm_subsys = {
+static const struct bus_type cmm_subsys = {
 	.name = "cmm",
 	.dev_name = "cmm",
 };

-- 
2.43.0