(no subject)

[Saravana]

> hi!
>    I am beginning learn to write a driver follow the
> Book "Beginnng Linux programming(Second
> Edition)".There is a example about char driver,I write
> as that,but I can open device,but can't read from it.I
> just copy some static data to user buffer as follow:
>    copy_to_user(buf, schar_buffer, count)

just check out if u got any perms(rw) on the device.. ?
sarvana