IXGBE_TSYNCRXCTL
regval = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);
IXGBE_WRITE_REG(hw, IXGBE_TSYNCRXCTL, regval);
u32 tsyncrxctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);
tsyncrxctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL);