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@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/sgi-ip22/ip22-gio.c b/arch/mips/sgi-ip22/ip22-gio.c
index 81c9f0a8880b0e5ff5fbc605dd3eef9886f2e51e..a3cdcb2899410bf4a37de8891261dd5bbae56222 100644 (file)
--- 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,