diff options
| author | Peter Tyser <ptyser@xes-inc.com> | 2010-12-30 15:47:56 -0600 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-01-19 00:04:43 +0100 |
| commit | 141053d60ac459bc3859c06fe7cf16160077f937 (patch) | |
| tree | 6b40cda4be9cb7bfb132bed3e02ca26cfa2ff59c /common | |
| parent | eddf52b593c6c5dfa1c0ce51a6656e3635175feb (diff) | |
cmd_jffs2: Fix get_part_sector_size_nor() overflow bug
When a flash partition was positioned at the very top of a 32-bit memory
map (eg located at 0xf8000000 with a size of 0x8000000)
get_part_sector_size_nor() would incorrectly calculate the partition's
ending address to 0x0 due to overflow. When the overflow occurred
get_part_sector_size_nor() would falsely return a sector size of 0.
A sector size of 0 results in subsequent jffs2 operations failing.
To workaround the overflow subtract 1 from calculated address of
the partition endpoint.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_jffs2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/common/cmd_jffs2.c b/common/cmd_jffs2.c index 0e7a6b0f3b2..27296ddd7d6 100644 --- a/common/cmd_jffs2.c +++ b/common/cmd_jffs2.c @@ -281,7 +281,7 @@ static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info * flash = &flash_info[id->num]; start_phys = flash->start[0] + part->offset; - end_phys = start_phys + part->size; + end_phys = start_phys + part->size - 1; for (i = 0; i < flash->sector_count; i++) { if (flash->start[i] >= end_phys) |