PANEL_UNLOCK_MASK
((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
val = (val & ~PANEL_UNLOCK_MASK) | PANEL_UNLOCK_REGS;
(control & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS)) {
control &= ~PANEL_UNLOCK_MASK;
WARN_ON((val & PANEL_UNLOCK_MASK) != PANEL_UNLOCK_REGS);