@@ -65,7 +65,7 @@ static void usage(int status)
"Options:\n"
" -h, --help Display this help output\n"
" -b, --peb <num> Index of the first erase block to use\n"
- " -c, --count <num> Number of erase blocks to use (default all)\n"
+ " -c, --count <num> Number of erase blocks to use (at least 2, default all)\n"
" -s, --skip <num> Number of erase blocks to skip\n"
" -S, --seed <num> Seed for pseudor random number generator\n"
" -k, --keep Restore existing contents after test\n",
@@ -143,6 +143,8 @@ static void process_options(int argc, char **argv)
if (optind < argc)
usage(EXIT_FAILURE);
+ if (ebcnt < 2)
+ errmsg_die("Cannot run with less than two blocks.");
if (peb < 0)
peb = 0;
if (!(flags & SEED_SET))
Forbid the use of less than 2 eraseblocks in nandpagetest. It is obvious that the test cannot run on zero block, but it cannot run on only one block neither. The reason is: get_first_and_last_block() will return the same id for both the first and the last blocks. In erasecrosstest(), the logic is: - erase/write/read/verify first block - erase/write again first block - erase *last* block - read/verify first block When using only one block, 'first' refers to the same block as 'last', leading to erasing the block before reading it. Hence, the test would fail with no actual reason. Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> --- tests/mtd-tests/nandpagetest.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)