Pseudo Character Driver :: Step By Step

step1

Simple skeleton,registering device driver, checking major number and unregistering

step2

Adding file interface,with dummy operations to the registered driver.

step3

Creating class, device file nodes automatically(without the need of mknod)

step4

Adding global buffer as device data store.

step5a

Using kfifo instead of global buffer.

step5b

Using access_ok to avoid local copy.

step6

Using Private object approach to encapsulate per device declarations.

step7

Extending the driver for multiple devices and using list operations.

step8

Adding synchronization support,blocking the file operations when the buffer is full or empty!!