I would like to thank my wife, Valentina, for putting up with my late night writing sessions and my children, Romina and Raffaele, for reminding me to come back like a child from time to time during the job. I would also like to extend my deep thanks and gratitude to the Packt Publishing staff, especially Subho Gupta, who gave me the opportunity to write this book, Samantha Gonsalves, who helped me finish this book, and Siddhi Rane for her help in fixing my English. Many thanks to Armando Genovese for his help in fixing several electrical and hardware configuration issues. I would also like to thank Antonio Tringali, Luca Belluomini, and Kumar Abhishek for their support and efforts in reviewing this book so carefully.

I would also like to thank my mentor, Alessandro Rubini, who introduced me to the wonderful world of Linux device driver programming. Many thanks to Richard M. Stallman for the GNU Project and to Linus Torvalds for the Linux kernel.

Last but not least, I cannot forget to thank my parents, who gave me my first computer when I was a child and allowed me to be do what I do today.