flash_{un,}lock: don't allow "last byte + 1"

A lock/unlock/islocked ioctl() should be prevented from anything past
the last byte, inclusive. But we were doing an exclusive check.

This isn't a big deal, as the kernel MTD APIs would be guarding this
anyway, but let's do this for completeness.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/flash_unlock.c b/flash_unlock.c
index 7a7a773d1d763875d719987518812b17a1a126c2..d775c0b01950e64a7c9ae8b6823e7dc68b1cdc2b 100644 (file)
--- a/flash_unlock.c
+++ b/flash_unlock.c
@@ -168,7 +168,7 @@ int main(int argc, char *argv[])
        } else {
                mtdLockInfo.start = 0;
        }
-       if (mtdLockInfo.start > mtdInfo.size)
+       if (mtdLockInfo.start >= mtdInfo.size)
                errmsg_die("%#x is beyond device size %#x",
                        mtdLockInfo.start, mtdInfo.size);