Fix offset calculation for multi-type legacy images.
Calculation of tail was incorrect when size % 4 == 0.
New code removes the conditional and does the same thing but with arithmetic
Signed-off-by: Nick Spence <nick.spence@freescale.com>
diff --git a/common/image.c b/common/image.c
index f7faf50..9e9e023 100644
--- a/common/image.c
+++ b/common/image.c
@@ -23,7 +23,6 @@
* MA 02111-1307 USA
*/
-
#ifndef USE_HOSTCC
#include <common.h>
#include <watchdog.h>
@@ -242,7 +241,7 @@
{
int i;
uint32_t *size;
- ulong offset, tail, count, img_data;
+ ulong offset, count, img_data;
/* get number of component */
count = image_multi_count (hdr);
@@ -258,19 +257,15 @@
if (idx < count) {
*len = uimage_to_cpu (size[idx]);
offset = 0;
- tail = 0;
/* go over all indices preceding requested component idx */
for (i = 0; i < idx; i++) {
- /* add up i-th component size */
- offset += uimage_to_cpu (size[i]);
-
- /* add up alignment for i-th component */
- tail += (4 - uimage_to_cpu (size[i]) % 4);
+ /* add up i-th component size, rounding up to 4 bytes */
+ offset += (uimage_to_cpu (size[i]) + 3) & ~3 ;
}
/* calculate idx-th component data address */
- *data = img_data + offset + tail;
+ *data = img_data + offset;
} else {
*len = 0;
*data = 0;