[U-Boot] [PATCH V3] bugfix: image header pointer change.

[Baidu Boy]

This patch is to avoid potential issue when we still use the pointer
images->legacy_hdr_os after the kernel un-compressed.

in function boot_get_kernel():
we should let the images->legacy_hdr_os point to the new copied image header,
not the original image header in uImage which may be over-written in
the kernel un-compressed process.  This is a potential problem.

Signed-off-by: Baidu Boy <liucai.lfn at gmail.com>
---
changes for V2:
 - Avoid unrelated syntax changes
changes for V3:
 - Add some description for this patch.

 common/cmd_bootm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 1a024f1..8f9e5f1 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -896,7 +896,7 @@ static void *boot_get_kernel (cmd_tbl_t *cmdtp,
int flag, int argc, char * const
 		memmove (&images->legacy_hdr_os_copy, hdr, sizeof(image_header_t));

 		/* save pointer to image header */
-		images->legacy_hdr_os = hdr;
+		images->legacy_hdr_os = &images->legacy_hdr_os_copy;

 		images->legacy_hdr_valid = 1;
 		show_boot_progress (6);
-- 
1.7.3.1.msysgit.0