Commit367e8560e8introduced a bug in fbtft-core where fps is always 0, this is because variable update_time is not assigned correctly. Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com> Fixes:367e8560e8("Staging: fbtbt: Replace timespec with ktime_t") Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>