The length must be given as bytes and not as 4 bit tuples. Signed-off-by: Jonas Rabenstein <jonas.rabenstein@xxxxxxxxxxxxxxxxxxxxxxx> --- block/sed-opal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/sed-opal.c b/block/sed-opal.c index 36842bfa572e..d5f565e1557a 100644 --- a/block/sed-opal.c +++ b/block/sed-opal.c @@ -562,7 +562,7 @@ static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) } msb = fls(number); - len = DIV_ROUND_UP(msb, 4); + len = DIV_ROUND_UP(msb, 8); if (cmd->pos >= IO_BUFFER_LENGTH - len - 1) { pr_debug("Error adding u64: end of buffer.\n"); -- 2.13.6