ARM: constify machine_desc structure uses

struct machine_desc records are defined everywhere as a 'const'
structure, but unfortuantely it loses its const-ness through the use of
linker magic - the symbols which surround the section are not declared
const so it becomes possible not to use 'const' for pointers to these
const structures.

Let's fix this oversight - all pointers to these structures should be
marked const too.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
index 14512e6931d8..8c14de8180c0 100644
--- a/arch/arm/kernel/atags_parse.c
+++ b/arch/arm/kernel/atags_parse.c
@@ -178,11 +178,11 @@ static void __init squash_mem_tags(struct tag *tag)
 			tag->hdr.tag = ATAG_NONE;
 }
 
-struct machine_desc * __init setup_machine_tags(phys_addr_t __atags_pointer,
-						unsigned int machine_nr)
+const struct machine_desc * __init
+setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr)
 {
 	struct tag *tags = (struct tag *)&default_tags;
-	struct machine_desc *mdesc = NULL, *p;
+	const struct machine_desc *mdesc = NULL, *p;
 	char *from = default_command_line;
 
 	default_tags.mem.start = PHYS_OFFSET;