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From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Sun, 11 Feb 2024 12:45:07 -0300
Subject: [PATCH 1/2] ARM: sa1111: make sa1111_bus_type const
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Message-Id: <20240211-bus_cleanup-rmk-v1-1-65668e578d55@marliere.net>
References: <20240211-bus_cleanup-rmk-v1-0-65668e578d55@marliere.net>
In-Reply-To: <20240211-bus_cleanup-rmk-v1-0-65668e578d55@marliere.net>
To: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@marliere.net>

Now that the driver core can properly handle constant struct bus_type,
move the sa1111_bus_type 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@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 arch/arm/common/sa1111.c               | 2 +-
 arch/arm/include/asm/hardware/sa1111.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 1fbd7363cf11..de5eba0a11f6 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -1367,7 +1367,7 @@ static void sa1111_bus_remove(struct device *dev)
 		drv->remove(sadev);
 }
 
-struct bus_type sa1111_bus_type = {
+const struct bus_type sa1111_bus_type = {
 	.name		= "sa1111-rab",
 	.match		= sa1111_match,
 	.probe		= sa1111_bus_probe,
diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h
index d8c6f8a99dfa..02f3f9ca8582 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -368,7 +368,7 @@
 
 
 
-extern struct bus_type sa1111_bus_type;
+extern const struct bus_type sa1111_bus_type;
 
 #define SA1111_DEVID_SBI	(1 << 0)
 #define SA1111_DEVID_SK		(1 << 1)

-- 
2.43.0