see, major no basically says that the device is of a particular type [eg. Printer in this case], but the minor no is the one who specifies a particular functionality of the driver. For eg in case of Printer only Major = 6, but minor can be 0,1,2,3... which basically decides a particular type of printer. Thanks. Sumit Sharma, IBM, Bangalore. On Wed, 29 Sep 2004 Zeeshan Ali wrote : >Hello, > I think I must clarify with examples. Lets say i develope a driver >for a particular printer device (call it X) and there is already a >driver for another printer that i have (call it Y). Now there are two >instances of two different printers connected to my PC: X and Y. As >these are different printers, they have different I/O interface and >therefore they need different drivers. But for user, they should be >accessible using the same device major number but different minor >numbers. So would'nt these two SEPERATE INDEPENDENT drivers share the >same major number? NOTE: i've taken the example of printer for the >sake of explanation. > >-- >Kernelnewbies: Help each other learn about the Linux kernel. >Archive: http://mail.nl.linux.org/kernelnewbies/ >FAQ: http://kernelnewbies.org/faq/ >
