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-rw-r--r--package/mtd/src/fis.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/package/mtd/src/fis.c b/package/mtd/src/fis.c
index 559ca95069..f825f590c9 100644
--- a/package/mtd/src/fis.c
+++ b/package/mtd/src/fis.c
@@ -143,6 +143,8 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
struct fis_image_desc *redboot = NULL;
struct fis_image_desc *first = NULL;
struct fis_image_desc *last = NULL;
+ struct fis_image_desc *first_fb = NULL;
+ struct fis_image_desc *last_fb = NULL;
struct fis_image_desc *desc;
struct fis_part *part;
uint32_t offset = 0, size = 0;
@@ -184,13 +186,21 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
}
desc--;
+ first_fb = first;
+ last_fb = last;
+
+ if (first_fb->hdr.flash_base > last_fb->hdr.flash_base) {
+ first_fb = last;
+ last_fb = first;
+ }
+
/* determine size of available space */
desc = (struct fis_image_desc *) start;
while ((char *) desc < end) {
if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff))
break;
- if (desc->hdr.flash_base > last->hdr.flash_base &&
+ if (desc->hdr.flash_base > last_fb->hdr.flash_base &&
desc->hdr.flash_base < offset)
offset = desc->hdr.flash_base;
@@ -198,7 +208,7 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
}
desc--;
- size = offset - first->hdr.flash_base;
+ size = offset - first_fb->hdr.flash_base;
#ifdef notyet
desc = first - 1;
@@ -214,7 +224,7 @@ fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
last++;
desc = first + n_new;
- offset = first->hdr.flash_base;
+ offset = first_fb->hdr.flash_base;
if (desc != last) {
if (desc > last)