mtd: afs: break out v1 footer magic to a define

Break out the magic number to a #defined constant.

Cc: Ryan Harkin <ryan.harkin@linaro.org>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/afs.c b/drivers/mtd/afs.c
index 9af0052..d09280a 100644 (file)
--- a/drivers/mtd/afs.c
+++ b/drivers/mtd/afs.c
@@ -34,6 +34,8 @@
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 
+#define AFSV1_FOOTER_MAGIC 0xA0FFFF9F
+
 struct footer_v1 {
        u32 image_info_base;    /* Address of first word of ImageFooter  */
        u32 image_start;        /* Start of area reserved by this footer */
@@ -90,7 +92,7 @@ afs_read_footer_v1(struct mtd_info *mtd, u_int *img_start, u_int *iis_start,
        /*
         * Does it contain the magic number?
         */
-       if (fs.signature != 0xa0ffff9f)
+       if (fs.signature != AFSV1_FOOTER_MAGIC)
                ret = 0;
 
        /*