cmd_jffs2: Fix get_part_sector_size_nor() overflow bug
authorPeter Tyser <ptyser@xes-inc.com>
Thu, 30 Dec 2010 21:47:56 +0000 (15:47 -0600)
committerWolfgang Denk <wd@denx.de>
Tue, 18 Jan 2011 23:04:43 +0000 (00:04 +0100)
commit141053d60ac459bc3859c06fe7cf16160077f937
tree6b40cda4be9cb7bfb132bed3e02ca26cfa2ff59c
parenteddf52b593c6c5dfa1c0ce51a6656e3635175feb
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>
common/cmd_jffs2.c