linux-kernel - [PATCH 1/2] mips: sgi-ip22: make gio_bus

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Message-Id: <20240204-bus_cleanup-mips-v1-1-05af5e9a7ead@marliere.net>
Date: Sun, 04 Feb 2024 12:06:57 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 1/2] mips: sgi-ip22: make gio_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the gio_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@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 arch/mips/sgi-ip22/ip22-gio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/sgi-ip22/ip22-gio.c b/arch/mips/sgi-ip22/ip22-gio.c
index 81c9f0a8880b..a3cdcb289941 100644
--- a/arch/mips/sgi-ip22/ip22-gio.c
+++ b/arch/mips/sgi-ip22/ip22-gio.c
@@ -12,7 +12,7 @@
 #include <asm/sgi/mc.h>
 #include <asm/sgi/ip22.h>

-static struct bus_type gio_bus_type;
+static const struct bus_type gio_bus_type;

 static struct {
 	const char *name;
@@ -378,7 +378,7 @@ static void ip22_check_gio(int slotno, unsigned long addr, int irq)
 		printk(KERN_INFO "GIO: slot %d : Empty\n", slotno);
 }

-static struct bus_type gio_bus_type = {
+static const struct bus_type gio_bus_type = {
 	.name	   = "gio",
 	.dev_groups = gio_dev_groups,
 	.match	   = gio_bus_match,

-- 
2.43.0