g_mpfs_ack_sig and g_mpfs_rx_sig are better used with SEM_INITIALIZER(0) (signalling) rather than with SEM_INITIALIZER(1) (mutual exclusion). Co-authored-by: Petro Karashchenko <petro.karashchenko@gmail.com> Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>